Industry vertical
Open Data
Government and civic open data, public datasets, and reference data.
381 providers
1001 APIs
Open Data on the APIs.io network indexes 381 providers publishing 1001 APIs across this industry vertical.
Notable providers include Wiktionary, Wikidata, Scryfall, Agricultural Statistics Service, MusicBrainz, KonbiniAPI, and 375 more — each profile links out to that provider’s APIs, capabilities, schemas, and governance artifacts.
Related industries: Education, Government & Public Sector, Healthcare & Life Sciences, and Aerospace & Defense. Browse every industry vertical at industries.apis.io.
About this industry
Open-data APIs — government and civic data portals, public-domain reference datasets, scientific and research data, and the broader open-data ecosystem that powers transparency and research.
Providers (381)
| Provider | Description | APIs | Rating |
|---|---|---|---|
| Wiktionary | Wiktionary is the free, collaborative multilingual dictionary project of the Wikimedia Foundation, the dictionary sibling of Wikipedia. Programmatic access is exposed through th... | 3 | developing |
| Wikidata | Wikidata is a free, collaborative, multilingual knowledge graph hosted by the Wikimedia Foundation. It provides structured linked data for Wikipedia and other Wikimedia projects... | 5 | developing |
| Scryfall | Scryfall is the most comprehensive free Magic - The Gathering card database. The Scryfall API exposes Cards (search, autocomplete, named, random, collection, by various IDs), Se... | 1 | developing |
| Agricultural Statistics Service | The National Agricultural Statistics Service (NASS) is an agency of the United States Department of Agriculture (USDA) whose mission is to support the United States, its agricul... | 4 | developing |
| MusicBrainz | MusicBrainz is an open-source, community-maintained music encyclopedia operated by the MetaBrainz Foundation, a US 501(c)(3) non-profit. It collects metadata about artists, rele... | 1 | developing |
| KonbiniAPI | KonbiniAPI is the social data layer for Instagram and TikTok, normalizing real-time public profile, post, video, comment, audio, location, and search data into a consistent Acti... | 1 | developing |
| FRED | The Federal Reserve Economic Data (FRED) API is a public web service operated by the Research Division of the Federal Reserve Bank of St. Louis. It provides programmatic access ... | 2 | developing |
| OpenStreetMap | OpenStreetMap (OSM) is a collaborative project to create a free, editable map of the world. The OSM ecosystem exposes a family of public REST APIs: the main editing API (v0.6) f... | 3 | developing |
| USPTO | The United States Patent and Trademark Office (USPTO) is the federal agency responsible for granting U.S. patents and registering trademarks. USPTO provides a suite of developer... | 6 | developing |
| US Census Bureau | The U.S. Census Bureau is the federal statistical agency responsible for producing data about the American people and economy. Established in 1902 and part of the U.S. Departmen... | 7 | developing |
| Rijksmuseum | Rijksmuseum is the Dutch national museum dedicated to Dutch arts and history, located in Amsterdam. Its RijksData open-data programme exposes more than 800,000 collection object... | 6 | developing |
| Trefle | An open, freely accessible botanical data source and REST API for plant information covering over 400,000 plant species with taxonomy, morphology, growth requirements, and geogr... | 1 | developing |
| University of Warsaw | The University of Warsaw (Uniwersytet Warszawski) is Poland's largest and highest-ranked university, placed #258 in the QS World University Rankings 2025. Its public developer f... | 3 | developing |
| Bureau of Labor Statistics | The U.S. Bureau of Labor Statistics (BLS) is the principal federal statistical agency responsible for measuring labor market activity, working conditions, price changes, and pro... | 1 | developing |
| Air Quality Programmatic APIs | Air Quality Programmatic APIs provide real-time and forecast air quality data from 11,000+ monitoring stations in 1,000+ cities worldwide. APIs deliver Air Quality Index (AQI) m... | 2 | developing |
| Weather.gov | Weather.gov is the official website of the National Weather Service (NWS), operated by NOAA within the US Department of Commerce. The NWS provides weather, hydrologic, and clima... | 1 | developing |
| SpaceX (Community API) | Community-maintained, open-source REST and GraphQL API for SpaceX data — launches, rockets, capsules, cores, crew, dragons, payloads, ships, landpads, launchpads, Starlink satel... | 2 | developing |
| Wikipedia / MediaWiki | Wikipedia is the free, multilingual online encyclopedia operated by the non-profit Wikimedia Foundation. The platform exposes its content and structured data through several pub... | 5 | developing |
| Danish Meteorological Institutes | The Danish Meteorological Institute is a government agency responsible for providing meteorological and climate services in Denmark. DMI publishes weather observations, climate ... | 1 | developing |
| TheSportsDB | An open, crowd-sourced sports database of artwork and metadata with a free sports API in JSON format. TheSportsDB provides data on sports leagues, teams, players, events, venues... | 1 | developing |
| Art Institute of Chicago | The Art Institute of Chicago publishes an open, REST + Elasticsearch-style Public API for ~120,000 artworks plus agents (artists/makers), places, galleries, exhibitions, tours, ... | 3 | developing |
| University of Amsterdam | The University of Amsterdam (Universiteit van Amsterdam, UvA) is a public research university in Amsterdam, Netherlands, ranked #43 in the QS World University Rankings 2025. Its... | 4 | developing |
| Commodity Futures Trading Commission | The Commodity Futures Trading Commission (CFTC) is the U.S. federal regulator for commodity futures and options markets. The CFTC publishes the weekly Commitments of Traders (CO... | 3 | developing |
| OpenMercantil | OpenMercantil is an independent public-data API for Spanish company intelligence. It indexes the Boletin Oficial del Registro Mercantil (BORME) and cross-references it with 29+ ... | 1 | developing |
| Norwegian University of Science and Technology | The Norwegian University of Science and Technology (NTNU) is Norway's largest university, headquartered in Trondheim with campuses in Gjoverik and Alesund, and ranked #264 in th... | 5 | developing |
| 2020 Police Brutality | This repository accumulates and contextualizes evidence of police brutality during the 2020 George Floyd protests. The goal is to assist journalists, politicians, prosecutors, a... | 1 | developing |
| GovInfo | The GovInfo API, provided by the U.S. Government Publishing Office (GPO), provides services for developers and webmasters to access GovInfo content and metadata, including searc... | 1 | developing |
| The Bureau of Economic Analysis | The Bureau of Economic Analysis (BEA) is an agency within the U.S. Department of Commerce that provides economic data to policymakers, businesses, and the general public. The BE... | 1 | developing |
| University of Bristol | The University of Bristol is a public research university in Bristol, United Kingdom, ranked #58 in the QS World University Rankings 2025. Its public developer/API footprint is ... | 3 | developing |
| PokéAPI | PokéAPI (pokeapi.co) is a free, open-source RESTful and GraphQL API serving comprehensive Pokémon data — including Pokémon species, abilities, moves, items, types, locations, ev... | 2 | thin |
| ETH Zurich – Swiss Federal Institute of Technology | ETH Zurich (Eidgenössische Technische Hochschule Zürich) is a public science and technology university founded in 1855, ranked #7 in the QS World University Rankings 2025. Its m... | 6 | thin |
| Radio Browser | Radio Browser is a free, community-driven directory of internet radio stations. The project publishes a public REST API exposing the full catalog of stations along with category... | 1 | thin |
| Deakin University | Deakin University is a public research university in Victoria, Australia, with campuses in Geelong, Warrnambool and Melbourne, ranked #197 in the QS World University Rankings 20... | 4 | thin |
| UCL | University College London (UCL) is a public research university in London, United Kingdom, ranked #9 in the QS World University Rankings 2025. UCL has a notably mature public de... | 8 | thin |
| Substance Abuse and Mental Health Services Administration | The Substance Abuse and Mental Health Services Administration (SAMHSA) is a branch of the U.S. Department of Health and Human Services dedicated to improving the quality and ava... | 3 | thin |
| DiscGolfAPI | DiscGolfAPI is a free, read-only public API that publishes structured JSON data about disc golf courses for developers, clubs, publishers, apps, and AI systems. It provides mach... | 1 | thin |
| Carnegie Mellon University | Carnegie Mellon University is a private research university in Pittsburgh, Pennsylvania, United States, ranked #50 in the QS World University Rankings 2025. Its public developer... | 3 | thin |
| Consumer Financial Protection Bureau | The Consumer Financial Protection Bureau (CFPB) is the U.S. federal agency that supervises banks, lenders, and other financial companies, enforces federal consumer financial law... | 3 | thin |
| TIER | TIER Mobility was a Berlin-headquartered shared electric micromobility operator founded in 2018 by Lawrence Leuschner, Julian Blessin, and Matthias Laug, providing e-scooter, e-... | 1 | thin |
| Technical University of Denmark | The Technical University of Denmark (DTU) is a leading engineering and science university in Kongens Lyngby, Denmark, ranked #109 in the QS World University Rankings 2025. DTU's... | 2 | thin |
| Dog API | The internet's biggest collection of open-source dog pictures. Fetching over 20,000 dog images accessible by more than 120 breeds via a free, no-auth REST API returning JSON. Op... | 1 | thin |
| Consumer Product Safety Commission | The U.S. Consumer Product Safety Commission (CPSC) is the federal agency responsible for protecting the public from unreasonable risks of injury or death associated with consume... | 2 | thin |
| Chicago Transit Authority | The Chicago Transit Authority (CTA) is the public transit operator for the City of Chicago and 35 surrounding suburbs, operating the second largest public transit system in the ... | 4 | thin |
| University of the Witwatersrand | The University of the Witwatersrand (Wits) is a leading public research university in Johannesburg, South Africa, ranked #268 in the QS World University Rankings 2025. Wits does... | 3 | thin |
| Open Trivia Database | The Open Trivia Database (OpenTDB) is a free, user-contributed trivia question database operated by Pixeltail Games LLC. It offers a JSON REST API for retrieving thousands of co... | 1 | thin |
| PostalCodes.info | Postal-code lookup, search, country exports, and address validation worldwide. PostalCodes.info publishes a same-origin reference API and bulk CSV / JSON / XLSX downloads for 12... | 1 | thin |
| Social Security Administration | The Social Security Administration (SSA) is a U.S. federal agency that administers Social Security programs including retirement, disability (SSDI), and survivor benefits. SSA's... | 4 | thin |
| VA Lighthouse | VA Lighthouse is the US Department of Veterans Affairs' developer API platform. Published at developer.va.gov with production endpoints at api.va.gov, Lighthouse exposes 22+ API... | 23 | thin |
| Taylor's University | Taylor's University is a private research university based in Subang Jaya, Selangor, Malaysia, and ranked #251 in the QS World University Rankings 2025. It does not operate a fo... | 4 | thin |
| Aviation Weather Center | The NOAA/NWS Aviation Weather Center (AWC) public data API provides machine-to-machine access to operational aviation weather products including METARs, TAFs, pilot reports (PIR... | 1 | thin |
| Wageningen University & Research | Wageningen University & Research (WUR) is a Dutch university and research institution based in Wageningen, Netherlands, specializing in the domain of healthy food and living env... | 3 | thin |
| New York Public Library What's On The Menu | The New York Public Library's What's On The Menu project is a crowdsourced digital collection of over 17,000 historical restaurant menus from the New York City area dating back ... | 1 | thin |
| Cardiff University | Cardiff University is a public research university in Cardiff, Wales, United Kingdom, ranked #186 in the QS World University Rankings 2025. The university operates a public deve... | 5 | thin |
| University of Adelaide | The University of Adelaide is a public research university in Adelaide, South Australia, founded in 1874, and ranked #72 in the QS World University Rankings 2025. Its public, de... | 3 | thin |
| École Normale Supérieure de Paris | École Normale Supérieure de Paris (ENS, rue d'Ulm) is a leading French grande école and constituent member of Université PSL (Paris Sciences & Lettres), ranked #86 in the QS Wor... | 3 | thin |
| Department of Energy | The U.S. Department of Energy (DOE) provides extensive open data and APIs across its national laboratories and program offices. Notable APIs are published by the Energy Informat... | 6 | thin |
| Lens | Lens is an open knowledge platform from Cambia that aggregates global scholarly works and patent records and exposes them through a REST API. The versioned API supports rich Ela... | 1 | thin |
| Monash University | Monash University is a public research university based in Melbourne, Australia, and a member of the Group of Eight. It ranked #42 in the QS World University Rankings 2025. Its ... | 2 | thin |
| University of Rochester | The University of Rochester is a private research university in Rochester, New York, ranked #236 in the QS World University Rankings 2025. It does not operate a single official,... | 2 | thin |
| Science Museum Group | The Science Museum Group operates five UK science and technology museums: the Science Museum (London), the Science and Industry Museum (Manchester), the National Railway Museum ... | 1 | thin |
| United States Census Bureau | The U.S. Census Bureau is the nation's leading provider of quality data about its people and economy. The Census Bureau has been rolling out datasets via APIs, providing program... | 3 | thin |
| Bureau of Justice Statistics Data Analysis Tools | The Bureau of Justice Statistics (BJS) is the agency within the U.S. Department of Justice responsible for collecting, analysing, and disseminating crime, criminal-justice, expe... | 2 | thin |
| La Trobe University | La Trobe University is a public research university based in Melbourne, Victoria, Australia, ranked #217 in the QS World University Rankings 2025. Like most universities, La Tro... | 3 | thin |
| US Department of Defense | The US Department of Defense is responsible for providing the military forces needed to deter war and protect the security of the United States. This includes overseeing the Arm... | 4 | thin |
| University of Canterbury | University of Canterbury (Te Whare Wananga o Waitaha) is a public research university in Christchurch, New Zealand, ranked #261 in the QS World University Rankings 2025. Its pub... | 4 | thin |
| Lund University | Lund University is a public research university in Lund, Sweden, founded in 1666 and ranked #74 in the QS World University Rankings 2025. Its public developer and API footprint ... | 5 | thin |
| Data Commons | Data Commons is an open knowledge graph initiative led by Google that aggregates and harmonizes the world's public data into a single graph, making global statistical data simpl... | 6 | thin |
| King's College London | King's College London (KCL) is a public research university in London, United Kingdom, ranked #41 in the QS World University Rankings 2025. Like most research universities, King... | 2 | thin |
| University of Bonn | The University of Bonn (Rheinische Friedrich-Wilhelms-Universität Bonn) is a public research university in Bonn, Germany, ranked #227 in the QS World University Rankings 2025. I... | 2 | thin |
| CMS — Centers for Medicare & Medicaid Services | The Centers for Medicare & Medicaid Services (CMS) is the U.S. federal agency within the Department of Health and Human Services that administers Medicare, Medicaid, the Childre... | 10 | thin |
| US Army Corps of Engineers | The US Army Corps of Engineers is a federal agency that plays a critical role in managing the nation's water resources and infrastructure. They are responsible for building and ... | 3 | thin |
| University of Manchester | The University of Manchester is a public research university in Manchester, England, ranked #31 in the QS World University Rankings 2025. Its public developer/API footprint is r... | 5 | thin |
| Michigan State University | Michigan State University (MSU) is a public land-grant research university in East Lansing, Michigan, United States, ranked #89 in the QS World University Rankings 2025. Like mo... | 4 | thin |
| US Bureau of Labor Statistics | The US Bureau of Labor Statistics (BLS) is the principal federal agency responsible for measuring labor market activity, working conditions, price changes, and productivity in t... | 1 | thin |
| University of Alberta | The University of Alberta is a public research university in Edmonton, Alberta, Canada, ranked #67 in the QS World University Rankings 2025. Its public, documented developer/API... | 3 | thin |
| Dartmouth College | Dartmouth College is a private Ivy League research university in Hanover, New Hampshire, United States, ranked #243 in the QS World University Rankings 2025. Its public develope... | 3 | thin |
| EPFL | EPFL (École Polytechnique Fédérale de Lausanne) is a public research university in Lausanne, Switzerland, ranked #19 in the QS World University Rankings 2025. EPFL exposes sever... | 3 | thin |
| Technical University of Munich | The Technical University of Munich (TUM) is a public research university in Munich, Germany, ranked #47 in the QS World University Rankings 2025. TUM does not operate a single c... | 3 | thin |
| University of Vienna | The University of Vienna (Universität Wien), founded in 1365, is Austria's largest university and ranks #78 in the QS World University Rankings 2025. Its public, programmaticall... | 3 | thin |
| Children's Hospital of Philadelphia | Founded in 1855 as the first hospital in the United States dedicated to the healthcare of children, Children's Hospital of Philadelphia (CHOP) is a 692-bed flagship pediatric ac... | 5 | thin |
| University of Washington | The University of Washington (UW) is a public research university based in Seattle, Washington, United States, ranked #52 in the QS World University Rankings 2025. UW operates a... | 5 | thin |
| US Army | The US Army is the largest branch of the United States military and is responsible for conducting ground combat operations. Its mission is to defend the nation and support human... | 2 | thin |
| University of Calgary | The University of Calgary is a public research university in Calgary, Alberta, Canada, ranked #198 in the QS World University Rankings 2025. Its public, documented developer foo... | 4 | thin |
| Newcastle University | Newcastle University is a public research university in Newcastle upon Tyne, United Kingdom, ranked #129 in the QS World University Rankings 2025. Its public developer and API f... | 5 | thin |
| US Department of Commerce | The US Department of Commerce is responsible for promoting economic growth and job creation in the United States. It oversees various programs and initiatives aimed at supportin... | 7 | thin |
| Cornell University | Cornell University is a private Ivy League and statutory land-grant research university based in Ithaca, New York, ranked #16 in the QS World University Rankings 2025. Its publi... | 4 | thin |
| Energy Information Administration | The U.S. Energy Information Administration (EIA) is committed to its free and open data by making it available through an Application Programming Interface (API) and its open da... | 1 | thin |
| National University of Colombia | The National University of Colombia (Universidad Nacional de Colombia, UNAL) is the country's largest public research university, ranked #219 in the QS World University Rankings... | 2 | thin |
| Kyoto University | Kyoto University is a national research university in Kyoto, Japan, ranked #37 in the QS World University Rankings 2025. Its public, machine-readable developer footprint is cent... | 2 | thin |
| University of Padua | The University of Padua (Università degli Studi di Padova) is a public research university in Padua, Italy, founded in 1222 and ranked #236 in the QS World University Rankings 2... | 6 | thin |
| National Tsing Hua University | National Tsing Hua University (NTHU) is a national public research university in Hsinchu, Taiwan, originally founded in 1911 and re-established in Taiwan in 1956. It is ranked #... | 1 | thin |
| Politecnico di Torino | Politecnico di Torino (PoliTO) is Italy's oldest technical university, founded in 1859 in Turin, and a leading European institution for engineering, architecture, and design, ra... | 3 | thin |
| University of Edinburgh | The University of Edinburgh is a public research university in Scotland, United Kingdom, founded in 1582 and ranked #20 in the QS World University Rankings 2025. Its public deve... | 4 | thin |
| Centers for Medicare and Medicaid Services | The Centers for Medicare and Medicaid Services (CMS) is the federal agency that provides health coverage to more than 160 million Americans through Medicare, Medicaid, the Child... | 9 | thin |
| Department of Homeland Security | The U.S. Department of Homeland Security (DHS) is a cabinet-level federal agency responsible for protecting the nation from terrorism, securing borders, enforcing immigration la... | 6 | thin |
| Charles University | Charles University (Univerzita Karlova), founded in 1348 in Prague, is the largest and oldest university in Czechia and is ranked #246 in the QS World University Rankings 2025. ... | 4 | thin |
| Country.io | Country.io is a small open data project that publishes a set of static JSON files mapping ISO 3166-1 alpha-2 country codes to common reference data: country names, capital citie... | 1 | thin |
| National Yang Ming Chiao Tung University | National Yang Ming Chiao Tung University (NYCU) is a public research university in Taiwan formed in 2021 from the merger of National Yang-Ming University and National Chiao Tung... | 3 | thin |
| University of Birmingham | The University of Birmingham is a public research university in Birmingham, United Kingdom, and a founding member of the Russell Group, ranked #94 in the QS World University Ran... | 4 | thin |
| Smithsonian Institution | The Smithsonian Institution provides open access APIs to its collections of over 22 million objects, artworks, and natural history specimens from 19 museums, 21 libraries, and 9... | 1 | thin |
| Nanyang Technological University | Nanyang Technological University (NTU Singapore) is a public research university in Singapore and is ranked #15 in the QS World University Rankings 2025. NTU's public, machine-r... | 3 | thin |
| University of Auckland | The University of Auckland is New Zealand's largest and highest-ranked university, placed #92 in the QS World University Rankings 2025. Its public developer and API footprint is... | 3 | thin |
| University of British Columbia | The University of British Columbia (UBC) is a public research university in Vancouver and Kelowna, British Columbia, Canada, ranked #33 in the QS World University Rankings 2025.... | 4 | thin |
| US Patent and Trademark Office | The US Patent and Trademark Office (USPTO) is responsible for granting patents and registering trademarks to protect intellectual property in the United States. The USPTO examin... | 2 | thin |
| University of North Carolina at Chapel Hill | The University of North Carolina at Chapel Hill is a leading public research university in Chapel Hill, North Carolina, United States, ranked #155 in the QS World University Ran... | 4 | thin |
| Purdue University | Purdue University is a public land-grant research university in West Lafayette, Indiana, United States, ranked #99 in the QS World University Rankings 2025. Its public, machine-... | 2 | thin |
| University of Zurich | The University of Zurich (UZH) is Switzerland's largest university, founded in 1833, and is ranked #61 in the QS World University Rankings 2025. UZH does not operate a centraliz... | 3 | thin |
| NASA Open APIs | NASA Open APIs is the National Aeronautics and Space Administration's unified, public developer portal exposing space, earth science, planetary, heliophysics, and bioscience dat... | 17 | thin |
| US Senate | The United States Senate is one of the two chambers of Congress, responsible for representing the interests of the individual states and ensuring that federal legislation is pas... | 1 | thin |
| US Space Command | US Space Command (USSPACECOM) is a unified combatant command in the United States Department of Defense responsible for conducting operations in, from, and through space to dete... | 1 | thin |
| USDA Agricultural Research Service (ARS) | The USDA Agricultural Research Service (ARS) is the principal in-house research agency of the US Department of Agriculture. ARS conducts research to develop and implement soluti... | 2 | thin |
| US Copyright Office | The US Copyright Office is a government agency responsible for administering and enforcing copyright laws in the United States. The office is responsible for registering and doc... | 4 | thin |
| University of Maryland College Park | The University of Maryland, College Park (UMD) is the flagship public research university of the University System of Maryland, located in College Park, Maryland, United States.... | 3 | thin |
| Georgia Institute of Technology | Georgia Institute of Technology (Georgia Tech) is a public research university in Atlanta, Georgia, United States, ranked #114 in the QS World University Rankings 2025. Its publ... | 5 | thin |
| Lancaster University | Lancaster University is a collegiate public research university in Lancaster, United Kingdom, ranked #141 in the QS World University Rankings 2025. Its public, machine-accessibl... | 3 | thin |
| PodcastIndex | The Podcast Index (Podcast Index LLC) is a software developer focused partnership that provides tools and data to anyone who aspires to create new and exciting Podcast experienc... | 1 | thin |
| TU Dresden | Technische Universität Dresden (TU Dresden) is one of Germany's leading research universities and a member of the German Universities Excellence Initiative, located in Dresden, ... | 5 | thin |
| Eindhoven University of Technology | Eindhoven University of Technology (TU/e) is a research-driven public technical university in Eindhoven, Netherlands, ranked #136 in the QS World University Rankings 2025. Its p... | 2 | thin |
| Chalmers University of Technology | Chalmers University of Technology (Chalmers tekniska hogskola) is a private technical university in Gothenburg, Sweden, ranked #139 in the QS World University Rankings 2025. Its... | 3 | thin |
| Aarhus University | Aarhus University (Aarhus Universitet) is a public research university in Aarhus, Denmark, founded in 1928 and ranked #144 in the QS World University Rankings 2025. It does not ... | 3 | thin |
| University of Pennsylvania | The University of Pennsylvania (Penn) is a private Ivy League research university in Philadelphia, ranked #11 in the QS World University Rankings 2025. Penn's public developer f... | 6 | thin |
| EU Open Data Portal | The EU Open Data Portal (data.europa.eu) is the official portal for European Union open data, operated by the Publications Office of the European Union. It provides SPARQL and R... | 2 | thin |
| YGOPRODeck | YGOPRODeck is a community-run Yu-Gi-Oh! TCG database and deck-sharing platform that exposes a free, public REST API (v7) for querying every Yu-Gi-Oh! card, archetype, card set, ... | 1 | thin |
| UCLouvain | UCLouvain (Universite catholique de Louvain) is Belgium's largest French-speaking university, based in Louvain-la-Neuve, and is ranked #203 in the QS World University Rankings 2... | 4 | thin |
| University of Illinois Urbana-Champaign | The University of Illinois Urbana-Champaign (UIUC) is a public land-grant research university and the flagship campus of the University of Illinois System, ranked #40 in the QS ... | 4 | thin |
| McGill University | McGill University is a public research university in Montreal, Quebec, Canada, ranked #64 in the QS World University Rankings 2025. Its public, machine-readable developer footpr... | 3 | thin |
| University of Waterloo | The University of Waterloo is a public research university in Waterloo, Ontario, Canada, ranked #115 in the QS World University Rankings 2025 and known for its cooperative educa... | 1 | thin |
| NHS England Digital | NHS England (incorporating the former NHS Digital and NHSX) provides national digital, data, and technology services for the NHS in England. The organization operates the Spine,... | 7 | thin |
| University of Groningen | The University of Groningen (Rijksuniversiteit Groningen, RUG/UG) is a public research university in Groningen, Netherlands, founded in 1614 and ranked #75 in the QS World Unive... | 4 | thin |
| Queen's University at Kingston | Queen's University at Kingston is a public research university in Kingston, Ontario, Canada, serving more than 25,000 students and ranked #193 in the QS World University Ranking... | 3 | thin |
| NOAA — National Oceanic and Atmospheric Administration | The National Oceanic and Atmospheric Administration (NOAA) is the United States scientific and regulatory agency within the Department of Commerce charged with monitoring oceani... | 12 | thin |
| National Energy System Operator | The National Energy System Operator (NESO) is the independent operator responsible for planning and operating Great Britain's electricity and gas networks. NESO publishes operat... | 1 | thin |
| Vrije Universiteit Amsterdam | Vrije Universiteit Amsterdam (VU Amsterdam) is a public research university in the Netherlands, ranked #221 in the QS World University Rankings 2025. Like most universities, VU ... | 3 | thin |
| The Index | theindex.fyi is a maintained meta-index of indie web and small web index sites — a curated catalog of curated catalogs. It tracks ~40 indexes spanning six categories (curated di... | 1 | thin |
| Université de Montréal | Université de Montréal (UdeM) is a leading French-language public research university in Montréal, Québec, Canada, ranked #95 in the QS World University Rankings 2025. Its publi... | 3 | thin |
| Tecnológico de Monterrey | Tecnológico de Monterrey (ITESM) is a private Mexican multi-campus university system headquartered in Monterrey, ranked #185 in the QS World University Rankings 2025. It operate... | 4 | thin |
| Administrative Office of the U.S. Courts | The Administrative Office of the United States Courts is the administrative agency of the United States federal court system, established in 1939. It provides legislative, admin... | 2 | thin |
| Uppsala University | Uppsala University (Uppsala universitet) is Sweden's oldest university, founded in 1477, and is ranked #103 in the QS World University Rankings 2025. Its public developer and AP... | 3 | thin |
| Boycott Israeli Consumer Goods Dataset | The Boycott Israeli Consumer Goods Dataset, maintained by TechForPalestine, is a version-controlled, golden-source repository collating consumer boycott and alternative product ... | 1 | thin |
| ClinicalTrials.gov | ClinicalTrials.gov is the U.S. National Institutes of Health (NIH) registry and results database of publicly and privately supported clinical studies of human participants condu... | 4 | thin |
| Aalto University | Aalto University is a multidisciplinary public research university in Espoo, Finland, formed in 2010 from the merger of three institutions and ranked #113 in the QS World Univer... | 4 | thin |
| An API of Ice And Fire | An API of Ice And Fire is the world's greatest source for quantified and structured data from the universe of A Song of Ice and Fire (and the HBO series Game of Thrones). The op... | 1 | thin |
| Maastricht University | Maastricht University (UM) is an international research university in Maastricht, Netherlands, known for its Problem-Based Learning model and ranked #230 in the QS World Univers... | 3 | thin |
| KU Leuven | KU Leuven (Katholieke Universiteit Leuven) is a research university in Leuven, Belgium, founded in 1425 and ranked #45 in the QS World University Rankings 2025. It maintains a d... | 6 | thin |
| USPTO | 6 | thin | |
| University of Chile | The University of Chile (Universidad de Chile, UChile) is the country's oldest public university, founded in 1842 in Santiago, and is ranked #139 in the QS World University Rank... | 2 | thin |
| Department of Education | The U.S. Department of Education (ED) is a federal agency that manages and coordinates federal assistance to education and establishes policy for it. ED's mission is to promote ... | 4 | thin |
| Department of Housing and Urban Development | The U.S. Department of Housing and Urban Development (HUD) is the federal agency responsible for overseeing programs that address the country's housing needs and promote sustain... | 4 | minimal |
| Department of Justice | The U.S. Department of Justice (DOJ) is the federal executive department responsible for enforcing the law and defending the interests of the United States. DOJ exposes a portfo... | 5 | minimal |
| Department of Labor | The U.S. Department of Labor (DOL) is the federal department that fosters, promotes, and develops the welfare of wage earners, job seekers, and retirees, improves working condit... | 5 | minimal |
| Congressional Budget Office | The Congressional Budget Office (CBO) is the U.S. legislative branch agency that provides nonpartisan analyses of budgetary and economic issues to Congress. CBO publishes the Bu... | 3 | minimal |
| University of Bath | The University of Bath is a public research university in Bath, United Kingdom, ranked #150 in the QS World University Rankings 2025. Its public, machine-readable developer foot... | 5 | minimal |
| US Air Force | The United States Air Force is responsible for providing air and space power to protect the United States and its interests. As part of the Department of the Air Force, the USAF... | 2 | minimal |
| University of Macau | The University of Macau (UM), founded in 1981, is the leading public comprehensive research university of the Macao Special Administrative Region and is ranked #245 in the QS Wo... | 1 | minimal |
| University of Cape Town | The University of Cape Town (UCT) is South Africa's leading public research university, ranked #96 in the QS World University Rankings 2025 and the highest-ranked university on ... | 3 | minimal |
| University of Michigan-Ann Arbor | The University of Michigan-Ann Arbor is a public research university ranked #21 in the QS World University Rankings 2025 (United States). Its developer and API footprint is led ... | 3 | minimal |
| Columbia University | Columbia University is a private Ivy League research university in New York City, ranked #18 in the QS World University Rankings 2025. Its public developer and API footprint is ... | 4 | minimal |
| Delft University of Technology | Delft University of Technology (TU Delft) is the largest and oldest public technical university in the Netherlands, ranked #51 in the QS World University Rankings 2025. Its publ... | 5 | minimal |
| Universitat Pompeu Fabra | Universitat Pompeu Fabra (UPF) is a public research university in Barcelona, Spain, ranked #266 in the QS World University Rankings 2025. Its public developer footprint centers ... | 4 | minimal |
| University of California, Berkeley | The University of California, Berkeley (UC Berkeley) is a public land-grant research university and the flagship campus of the University of California system, ranked #12 in the... | 4 | minimal |
| Bureau of Transportation Statistics | The Bureau of Transportation Statistics (BTS), part of the Department of Transportation (DOT) is the preeminent source of statistics on commercial aviation, multimodal freight a... | 3 | minimal |
| Cancer.gov | Cancer.gov is the web presence of the National Cancer Institute (NCI), the U.S. federal government's principal agency for cancer research and training. NCI and its partner progr... | 6 | minimal |
| Centers for Disease Control and Prevention | The Centers for Disease Control and Prevention (CDC) is the United States' national public health agency, part of the Department of Health and Human Services. CDC operates a bro... | 7 | minimal |
| University of Exeter | The University of Exeter is a public research university in Devon, United Kingdom, and a member of the Russell Group, ranked #169 in the QS World University Rankings 2025. Its p... | 4 | minimal |
| University of Southampton | The University of Southampton is a public research university in Southampton, United Kingdom, ranked #70 in the QS World University Rankings 2025. It is a founding member of the... | 3 | minimal |
| University of Texas at Austin | The University of Texas at Austin is a flagship public research university in Austin, Texas, United States, ranked #65 in the QS World University Rankings 2025. Its public, mach... | 3 | minimal |
| Peking University | Peking University (PKU) is a major public research university in Beijing, China, ranked #25 in the QS World University Rankings 2025. Its most clearly documented public, machine... | 2 | minimal |
| Open Library | Open Library offers a suite of APIs to help developers get up and running with its data. This includes RESTful APIs that make Open Library data available in JSON, YAML, and RDF/... | 11 | minimal |
| University of Bologna | The University of Bologna (Alma Mater Studiorum - Università di Bologna) is the oldest university in the Western world and a leading Italian research institution, ranked #133 in... | 2 | minimal |
| Arizona State University | Arizona State University (ASU) is a large public research university based in Tempe, Arizona, United States, ranked #200 in the QS World University Rankings 2025. ASU's confirme... | 4 | minimal |
| University of Melbourne | The University of Melbourne is Australia's leading research university, ranked #24 in the QS World University Rankings 2025. Its public developer and API footprint is modest and... | 4 | minimal |
| University of Barcelona | The University of Barcelona (Universitat de Barcelona, UB) is a public research university founded in 1450 and based in Barcelona, Catalonia, Spain. It is ranked #165 in the QS ... | 3 | minimal |
| Health Resources and Services Administration | The Health Resources and Services Administration (HRSA) is the primary Federal agency for improving access to health care services for people who are uninsured, isolated, or med... | 2 | minimal |
| University of Tübingen | The University of Tübingen (Eberhard Karls Universität Tübingen), founded in 1477 in Tübingen, Germany, is one of the oldest universities in the country and ranks #222 in the QS... | 2 | minimal |
| Complutense University of Madrid | Complutense University of Madrid (Universidad Complutense de Madrid, UCM) is a major public research university in Spain, ranked #164 in the QS World University Rankings 2025. I... | 4 | minimal |
| Federal Trade Commission | The Federal Trade Commission (FTC) is a U.S. federal agency that enforces antitrust and consumer protection laws affecting virtually every area of commerce. The FTC publishes de... | 4 | minimal |
| National Cheng Kung University | National Cheng Kung University (NCKU) is a public research university based in Tainan, Taiwan, ranked #215 in the QS World University Rankings 2025. Its public, machine-readable... | 3 | minimal |
| Princeton University | Princeton University is a private Ivy League research university in Princeton, New Jersey, ranked #13 in the QS World University Rankings 2025. Its public developer footprint is... | 3 | minimal |
| University of Minnesota | The University of Minnesota is a public land-grant research university with its flagship campus in the Twin Cities (Minneapolis-Saint Paul), ranked #203 in the QS World Universi... | 3 | minimal |
| University of Queensland | The University of Queensland (UQ) is a public research university in Brisbane, Australia, ranked #54 in the QS World University Rankings 2025. UQ's public developer and API foot... | 3 | minimal |
| American Battle Monuments Commission | The American Battle Monuments Commission (ABMC), established by Congress in 1923, commemorates the service, achievements, and sacrifice of U.S. Armed Forces. ABMC administers an... | 1 | minimal |
| Politecnico di Milano | Politecnico di Milano is Italy's largest technical university, focused on engineering, architecture, and design, and ranked #111 in the QS World University Rankings 2025. Its pu... | 3 | minimal |
| Central Intelligence Agency | The Central Intelligence Agency (CIA) is the United States' civilian foreign intelligence service of the federal government, tasked with gathering, processing, and analyzing nat... | 6 | minimal |
| U.S. Immigration and Customs Enforcement (ICE) | U.S. Immigration and Customs Enforcement (ICE) is a federal law enforcement agency under the U.S. Department of Homeland Security responsible for enforcing federal immigration a... | 3 | minimal |
| University of California, San Francisco | The University of California, San Francisco (UCSF) is a public health-sciences university and the only UC campus dedicated exclusively to graduate and health professions educati... | 2 | minimal |
| Griffith University | Griffith University is a public research university in Queensland, Australia, ranked #255 in the QS World University Rankings 2025. Its public, machine-readable developer footpr... | 3 | minimal |
| California Institute of Technology | The California Institute of Technology (Caltech) is a private research university in Pasadena, California, ranked #10 in the QS World University Rankings 2025. Caltech's public,... | 3 | minimal |
| Hong Kong University of Science and Technology | The Hong Kong University of Science and Technology (HKUST) is a public research university in Clear Water Bay, Hong Kong SAR, ranked #82 in the QS World University Rankings 2025... | 3 | minimal |
| University of Tokyo | The University of Tokyo (UTokyo) is Japan's leading national research university, founded in 1877 and ranked #29 in the QS World University Rankings 2025. Its public, machine-re... | 2 | minimal |
| University of Antwerp | The University of Antwerp (Universiteit Antwerpen) is a public research university in Antwerp, Belgium, ranked #267 in the QS World University Rankings 2025. Its public develope... | 2 | minimal |
| University of Freiburg | The University of Freiburg (Albert-Ludwigs-Universität Freiburg) is a public research university in Freiburg im Breisgau, Germany, founded in 1457 and ranked #212 in the QS Worl... | 3 | minimal |
| Australian National University | The Australian National University (ANU) is a public research university in Canberra, ranked #28 in the QS World University Rankings 2025 and consistently among Australia's lead... | 2 | minimal |
| Gadjah Mada University | Gadjah Mada University (Universitas Gadjah Mada, UGM) is a public research university in Yogyakarta, Indonesia, and is ranked #239 in the QS World University Rankings 2025. Its ... | 2 | minimal |
| Queensland University of Technology | Queensland University of Technology (QUT) is a public research university based in Brisbane, Australia, ranked #213 in the QS World University Rankings 2025. QUT serves around 5... | 1 | minimal |
| United Arab Emirates University | United Arab Emirates University (UAEU) is a public research university in Al Ain, United Arab Emirates, ranked #262 in the QS World University Rankings 2025. Its public, machine... | 2 | minimal |
| University of Lisbon | The University of Lisbon (Universidade de Lisboa, ULisboa) is Portugal's largest public university, based in Lisbon, and is ranked #260 in the QS World University Rankings 2025.... | 2 | minimal |
| Administration for Community Living (ACL) | The Administration for Community Living (ACL) is part of the United States Department of Health and Human Services. ACL works to maximize the independence, well-being, and healt... | 1 | minimal |
| Administration for Native Americans (ANA) | The Administration for Native Americans (ANA) is an agency within the Administration for Children and Families (ACF), U.S. Department of Health and Human Services. ANA promotes ... | 1 | minimal |
| Administrative Conference of the United States | The Administrative Conference of the United States (ACUS) is an independent federal agency within the executive branch whose statutory mission is to identify ways to improve the... | 2 | minimal |
| Environmental Protection Agency | The U.S. Environmental Protection Agency (EPA) provides multiple public data APIs covering environmental records, air quality monitoring, UV forecasts, and internal data holding... | 4 | minimal |
| Ghent University | Ghent University (Universiteit Gent, UGent) is a major public research university in Ghent, Belgium, ranked #169 in the QS World University Rankings 2025. Its public developer f... | 5 | minimal |
| Karlsruhe Institute of Technology | Karlsruhe Institute of Technology (KIT) is a public research university and national research center in Karlsruhe, Germany, ranked #102 in the QS World University Rankings 2025.... | 4 | minimal |
| University of Florida | The University of Florida (UF) is a public land-grant research university in Gainesville, Florida, United States, and ranks #215 in the QS World University Rankings 2025. UF doe... | 3 | minimal |
| University of Helsinki | The University of Helsinki is Finland's oldest and largest multidisciplinary research university, founded in 1640, and is ranked #68 in the QS World University Rankings 2025. It... | 3 | minimal |
| University of Pittsburgh | The University of Pittsburgh is a public research university in Pittsburgh, Pennsylvania, United States, ranked #271 in the QS World University Rankings 2025. Its public develop... | 4 | minimal |
| University of Sydney | The University of Sydney is Australia's first university, founded in 1850, and is ranked #32 in the QS World University Rankings 2025. Its public digital footprint centers on st... | 3 | minimal |
| University of Toronto | The University of Toronto is Canada's leading public research university, ranked #26 in the QS World University Rankings 2025. Its public developer and API footprint is modest a... | 3 | minimal |
| École des Ponts ParisTech | École des Ponts ParisTech (École nationale des ponts et chaussées, ENPC) is a leading French public engineering grande école based in Champs-sur-Marne, ranked #205 in the QS Wor... | 3 | minimal |
| Energy and Utilities | Energy and Utilities is a topic profile in the API Evangelist Network cataloging the API surfaces that move data across the modern electricity, gas, and water value chain. It in... | 9 | minimal |
| University of Campinas | The University of Campinas (Universidade Estadual de Campinas, Unicamp) is a public research university in Campinas, São Paulo, Brazil, ranked #232 in the QS World University Ra... | 2 | minimal |
| General Services Administration | The General Services Administration (GSA) provides workplaces by constructing, managing, and preserving government buildings and by leasing and managing commercial real estate. ... | 31 | minimal |
| Overture Maps Foundation | The Overture Maps Foundation is a Linux Foundation project created in partnership with Meta, Microsoft, AWS, and TomTom to build reliable, open map data as an alternative to pro... | 1 | minimal |
| Overture Maps Foundation | Overture Maps Foundation is a Linux Foundation collaborative project that produces free, open, and interoperable map data. Overture publishes cloud-native GeoParquet datasets, o... | 11 | minimal |
| Boston University | Boston University is a private research university in Boston, Massachusetts, chartered in 1869, ranked #88 in the QS World University Rankings 2025. It serves over 34,000 studen... | 2 | minimal |
| Curtin University | Curtin University is a public research university based in Perth, Western Australia, and is ranked #174 in the QS World University Rankings 2025. Curtin operates an institutiona... | 2 | minimal |
| Fudan University | Fudan University is a major public research university in Shanghai, China, ranked #84 in the QS World University Rankings 2025. It operates a Dataverse research data repository ... | 1 | minimal |
| PrisonDB | PrisonDB is a project that aims to provide information and tools to help folks gain access to data about prisons, jails, immigrant detention centers and other correctional insti... | 1 | minimal |
| Sapienza University of Rome | Sapienza University of Rome (Sapienza Università di Roma) is Italy's largest university and ranked #132 in the QS World University Rankings 2025. Its public machine-readable foo... | 2 | minimal |
| University of Gothenburg | The University of Gothenburg (Göteborgs universitet) is a public research university in Sweden, founded in 1891, with roughly 37,000 students and 6,000 employees, and ranked #19... | 2 | minimal |
| Data.gov | Data.gov is the United States federal government's open data catalog, operated by the General Services Administration (GSA) Technology Transformation Services. It indexes over 3... | 4 | minimal |
| British Columbia Data Catalogue | The British Columbia Data Catalogue is the official open data portal for the Government of British Columbia, Canada. Built on the CKAN open data platform, it provides programmat... | 1 | minimal |
| International Development Finance Corporation | The United States International Development Finance Corporation (DFC) is a development finance institution and agency of the United States federal government. DFC invests in dev... | 1 | minimal |
| Alberta | Alberta is a open data portal open-data portal for Canada running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 33,436 data... | 1 | minimal |
| AmeriGEOSS Community Platform | AmeriGEOSS Community Platform is a organization open-data portal for United States running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over ... | 1 | minimal |
| Analyze Boston | Analyze Boston is a municipal government open-data portal for United States running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approxi... | 1 | minimal |
| Aragón Open Data | Aragón Open Data is a open data portal open-data portal for Spain running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 2,4... | 1 | minimal |
| Avoindata.fi | Avoindata.fi is a national government open-data portal for Finland running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 2,... | 1 | minimal |
| BC Data Catalogue | BC Data Catalogue is a provincial government open-data portal for Canada running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximat... | 1 | minimal |
| BODIK ODCS | BODIK ODCS is a organization open-data portal for Japan running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 17,545 datase... | 1 | minimal |
| Barnet Open Data | Barnet Open Data is a local council open-data portal for United Kingdom running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximate... | 1 | minimal |
| Bienvenido a OpenData UGR | Bienvenido a OpenData UGR is a open data portal open-data portal for Spain running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approxim... | 1 | minimal |
| British Columbia (DataBC) | British Columbia (DataBC) is a open data portal open-data portal for Canada running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approxi... | 1 | minimal |
| Buenos Aires Data | Buenos Aires Data is a open data portal open-data portal for Argentina running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximatel... | 1 | minimal |
| CKAN Demo | CKAN Demo is a organization open-data portal running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 13 datasets, supporting ... | 1 | minimal |
| Calderdale Data Works | Calderdale Data Works is a local council open-data portal for United Kingdom running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approx... | 1 | minimal |
| California Health and Human Services | California Health and Human Services is a state government open-data portal for United States running CKAN. It exposes the CKAN catalog API, a standardized machine-readable inte... | 1 | minimal |
| California Natural Resources Agency | California Natural Resources Agency is a state government open-data portal for United States running CKAN. It exposes the CKAN catalog API, a standardized machine-readable inter... | 1 | minimal |
| California Open Data | California Open Data is a state government open-data portal for United States running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over appro... | 1 | minimal |
| City of Milan Open Data | City of Milan Open Data is a open data portal open-data portal for Italy running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximat... | 1 | minimal |
| City of San Jose | City of San Jose is a open data portal open-data portal for United States running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approxima... | 1 | minimal |
| City of Toronto Open Data | City of Toronto Open Data is a municipal government open-data portal for Canada running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over app... | 1 | minimal |
| Cork City Open Data | Cork City Open Data is a municipal government open-data portal for Ireland running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approxim... | 1 | minimal |
| DATA GO JP | DATA GO JP is a national government open-data portal for Japan running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 18,366... | 1 | minimal |
| DATA.GOV.HK | DATA.GOV.HK is a national government open-data portal for Hong Kong running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 2... | 1 | minimal |
| DOE NETL Energy Data Exchange | DOE NETL Energy Data Exchange is a federal government open-data portal for United States running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface... | 1 | minimal |
| Dados Abertos POA | Dados Abertos POA is a open data portal open-data portal for Brazil running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately a... | 1 | minimal |
| Dados RS | Dados RS is a open data portal open-data portal for Brazil running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 404 datase... | 1 | minimal |
| Dados abertos Distrito Federal | Dados abertos Distrito Federal is a open data portal open-data portal for Brazil running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over ap... | 1 | minimal |
| Data Mill North (Leeds) | Data Mill North (Leeds) is a local council open-data portal for United Kingdom running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over appr... | 1 | minimal |
| Data.gov Inventory | Data.gov Inventory is a federal government open-data portal for United States running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over appro... | 1 | minimal |
| DataVic Victoria | DataVic Victoria is a state government open-data portal for Australia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately... | 1 | minimal |
| Datenregister Berlin | Datenregister Berlin is a municipal government open-data portal for Germany running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approxi... | 1 | minimal |
| Datos Abiertos ACUMAR | Datos Abiertos ACUMAR is a government agency open-data portal for Argentina running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approxi... | 1 | minimal |
| Datos Abiertos ARSAT | Datos Abiertos ARSAT is a government agency open-data portal for Argentina running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approxim... | 1 | minimal |
| Datos Abiertos Bogota | Datos Abiertos Bogota is a municipal government open-data portal for Colombia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over appro... | 1 | minimal |
| Datos Abiertos Salud Argentina | Datos Abiertos Salud Argentina is a government agency open-data portal for Argentina running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface ove... | 1 | minimal |
| Datos Agricultura Argentina | Datos Agricultura Argentina is a government agency open-data portal for Argentina running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over a... | 1 | minimal |
| Datos Argentina | Datos Argentina is a national government open-data portal for Argentina running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximate... | 1 | minimal |
| Datos Energia Argentina | Datos Energia Argentina is a government agency open-data portal for Argentina running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over appro... | 1 | minimal |
| Datos Provincia de Misiones | Datos Provincia de Misiones is a state government open-data portal for Argentina running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over ap... | 1 | minimal |
| Datos Transporte Argentina | Datos Transporte Argentina is a government agency open-data portal for Argentina running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over ap... | 1 | minimal |
| Datos Turismo y Deportes Argentina | Datos Turismo y Deportes Argentina is a government agency open-data portal for Argentina running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface... | 1 | minimal |
| Datos abiertos | Datos abiertos is a open data portal open-data portal for Spain running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 667 d... | 1 | minimal |
| Donnees Ouvertes Montreal | Donnees Ouvertes Montreal is a municipal government open-data portal for Canada running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over app... | 1 | minimal |
| Donnees Quebec | Donnees Quebec is a provincial government open-data portal for Canada running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately... | 1 | minimal |
| ENERGYDATA.info | ENERGYDATA.info is a organization open-data portal running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 1,190 datasets, su... | 1 | minimal |
| EUDAT B2FIND | EUDAT B2FIND is a organization open-data portal for European Union running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 1,... | 1 | minimal |
| Essex Open Data | Essex Open Data is a local council open-data portal for United Kingdom running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximatel... | 1 | minimal |
| Fortaleza Dados Abertos | Fortaleza Dados Abertos is a open data portal open-data portal for Brazil running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approxima... | 1 | minimal |
| Gifu Prefecture Open Data | Gifu Prefecture Open Data is a regional government open-data portal for Japan running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over appro... | 1 | minimal |
| Gouvernement ouvert Canada (FR) | Gouvernement ouvert Canada (FR) is a national government open-data portal for Canada running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface ove... | 1 | minimal |
| GovData Deutschland | GovData Deutschland is a national government open-data portal for Germany running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approxima... | 1 | minimal |
| Governo Aberto do Estado de São Paulo | Governo Aberto do Estado de São Paulo is a open data portal open-data portal for br running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over... | 1 | minimal |
| Greece National Data Portal | Greece National Data Portal is a open data portal open-data portal for gr running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approxima... | 1 | minimal |
| Hawaii Open Data Portal | Hawaii Open Data Portal is a state government open-data portal for United States running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over ap... | 1 | minimal |
| Humanitarian Data Exchange | Humanitarian Data Exchange is a organization open-data portal running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 27,880 ... | 1 | minimal |
| IATI Registry | IATI Registry is a open data portal open-data portal running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 13,656 datasets,... | 1 | minimal |
| Leeds Data Mill | Leeds Data Mill is a open data portal open-data portal for United Kingdom running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approxima... | 1 | minimal |
| London Datastore | London Datastore is a open data portal open-data portal for GB running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately an ope... | 1 | minimal |
| Medicaid Open Data | Medicaid Open Data is a federal government open-data portal for United States running DKAN. It exposes the DKAN catalog API, a standardized machine-readable interface over appro... | 1 | minimal |
| Montréal, Québec | Montréal, Québec is a open data portal open-data portal for Canada running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 40... | 1 | minimal |
| NASA Open Data | NASA Open Data is a federal government open-data portal for United States running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approxima... | 1 | minimal |
| NHS Scotland Open Data | NHS Scotland Open Data is a government agency open-data portal for United Kingdom running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over a... | 1 | minimal |
| NSW Government Open Data | NSW Government Open Data is a state government open-data portal for Australia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over appro... | 1 | minimal |
| Niagara Open Data | Niagara Open Data is a county government open-data portal for Canada running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately ... | 1 | minimal |
| Northern Territory Open Data | Northern Territory Open Data is a territorial government open-data portal for Australia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface ... | 1 | minimal |
| OPSI Slovenia | OPSI Slovenia is a national government open-data portal for Slovenia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately ... | 1 | minimal |
| Official Ukrainian Government Portal | Official Ukrainian Government Portal is a open data portal open-data portal for Ukraine running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface ... | 1 | minimal |
| Oklahoma | Oklahoma is a open data portal open-data portal for United States running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 391... | 1 | minimal |
| Ontario Data Catalogue | Ontario Data Catalogue is a provincial government open-data portal for Canada running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over appro... | 1 | minimal |
| Open Data Regione Toscana | Open Data Regione Toscana is a open data portal open-data portal for Italy running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approxim... | 1 | minimal |
| Open Data Schleswig-Holstein | Open Data Schleswig-Holstein is a state government open-data portal for Germany running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over app... | 1 | minimal |
| Open Data Trentino | Open Data Trentino is a open data portal open-data portal for Italy running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 1... | 1 | minimal |
| Open Development Cambodia | Open Development Cambodia is a organization open-data portal for Cambodia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approxima... | 1 | minimal |
| Open Development Mekong | Open Development Mekong is a organization open-data portal for Mekong Region running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approx... | 1 | minimal |
| Open Development Myanmar | Open Development Myanmar is a organization open-data portal for Myanmar running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximate... | 1 | minimal |
| Open Development Vietnam | Open Development Vietnam is a organization open-data portal for Vietnam running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximate... | 1 | minimal |
| Open Government Canada | Open Government Canada is a national government open-data portal for Canada running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approxi... | 1 | minimal |
| OpenData.HRO - Portal für offene Data der Hansestadt Rostock | OpenData.HRO - Portal für offene Data der Hansestadt Rostock is a open data portal open-data portal for Germany running CKAN. It exposes the CKAN catalog API, a standardized mac... | 1 | minimal |
| OpenDataNI (Northern Ireland) | OpenDataNI (Northern Ireland) is a regional government open-data portal for United Kingdom running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interfa... | 1 | minimal |
| Portal Datos Abiertos Ayuntamiento de Málaga | Portal Datos Abiertos Ayuntamiento de Málaga is a open data portal open-data portal for Spain running CKAN. It exposes the CKAN catalog API, a standardized machine-readable inte... | 1 | minimal |
| Portal de Dados Abertos da Cidade de São Paulo | Portal de Dados Abertos da Cidade de São Paulo is a open data portal open-data portal for Brazil running CKAN. It exposes the CKAN catalog API, a standardized machine-readable i... | 1 | minimal |
| Portal de Dados Abertos – Prefeitura de Belo Horizonte | Portal de Dados Abertos – Prefeitura de Belo Horizonte is a open data portal open-data portal for Brazil running CKAN. It exposes the CKAN catalog API, a standardized machine-re... | 1 | minimal |
| Portal de Dados Urbanos PPGAU UFF - Open data portal for Urban Resarch | Portal de Dados Urbanos PPGAU UFF - Open data portal for Urban Resarch is a open data portal open-data portal for Brazil running CKAN. It exposes the CKAN catalog API, a standar... | 1 | minimal |
| Portal de Datos Abiertos Republica Dominicana | Portal de Datos Abiertos Republica Dominicana is a national government open-data portal for Dominican Republic running CKAN. It exposes the CKAN catalog API, a standardized mach... | 1 | minimal |
| Portal oficial Ayuntamiento de Rivas Vaciamadrid | Portal oficial Ayuntamiento de Rivas Vaciamadrid is a open data portal open-data portal for Spain running CKAN. It exposes the CKAN catalog API, a standardized machine-readable ... | 1 | minimal |
| Portale Dati aperti del Comune di Matera | Portale Dati aperti del Comune di Matera is a open data portal open-data portal for Italy running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interfac... | 1 | minimal |
| Queensland Geoscience Data | Queensland Geoscience Data is a state government open-data portal for Australia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over app... | 1 | minimal |
| Queensland Government Data | Queensland Government Data is a open data portal open-data portal for Australia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over app... | 1 | minimal |
| Recife City Open Data | Recife City Open Data is a open data portal open-data portal for Brazil running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximate... | 1 | minimal |
| San Bernardino County ATC OpenData | San Bernardino County ATC OpenData is a county government open-data portal for United States running CKAN. It exposes the CKAN catalog API, a standardized machine-readable inter... | 1 | minimal |
| Satu Data Aceh | Satu Data Aceh is a provincial government open-data portal for Indonesia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximat... | 1 | minimal |
| Satu Data Bencana Indonesia (BNPB) | Satu Data Bencana Indonesia (BNPB) is a government agency open-data portal for Indonesia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface... | 1 | minimal |
| Satu Data Kalimantan Timur | Satu Data Kalimantan Timur is a provincial government open-data portal for Indonesia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface ove... | 1 | minimal |
| Satu Data Semarang Regency | Satu Data Semarang Regency is a regional government open-data portal for Indonesia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over ... | 1 | minimal |
| Smart Dublin Open Data | Smart Dublin Open Data is a municipal government open-data portal for Ireland running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over appro... | 1 | minimal |
| Spatial Hub Scotland | Spatial Hub Scotland is a regional government open-data portal for United Kingdom running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over a... | 1 | minimal |
| Tokyo Metropolitan Open Data | Tokyo Metropolitan Open Data is a regional government open-data portal for Japan running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over ap... | 1 | minimal |
| Transparency Portal for the City of Karlsruhe, Germany | Transparency Portal for the City of Karlsruhe, Germany is a open data portal open-data portal for Germany running CKAN. It exposes the CKAN catalog API, a standardized machine-r... | 1 | minimal |
| Transport for NSW Open Data Hub | Transport for NSW Open Data Hub is a open data portal open-data portal for Australia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface ove... | 1 | minimal |
| US Small Business Administration Open Data | US Small Business Administration Open Data is a federal government open-data portal for United States running CKAN. It exposes the CKAN catalog API, a standardized machine-reada... | 1 | minimal |
| Virginia Open Data | Virginia Open Data is a state government open-data portal for United States running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approxi... | 1 | minimal |
| Western Australia Data Catalogue | Western Australia Data Catalogue is a state government open-data portal for Australia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface ov... | 1 | minimal |
| Yokohama City Open Data | Yokohama City Open Data is a municipal government open-data portal for Japan running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approx... | 1 | minimal |
| Yukon Open Data | Yukon Open Data is a territorial government open-data portal for Canada running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximate... | 1 | minimal |
| data.gov.au Federal | data.gov.au Federal is a national government open-data portal for Australia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approxi... | 1 | minimal |
| data.gov.ie | data.gov.ie is a open data portal open-data portal for Ireland running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 22,200... | 1 | minimal |
| data.gov.lv | data.gov.lv is a national government open-data portal for Latvia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 1,53... | 1 | minimal |
| data.gov.uk CKAN Publishing Service | data.gov.uk CKAN Publishing Service is a national government open-data portal for United Kingdom running CKAN. It exposes the CKAN catalog API, a standardized machine-readable i... | 1 | minimal |
| data.gov.uk UK National | data.gov.uk UK National is a national government open-data portal for United Kingdom running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface ove... | 1 | minimal |
| data.overheid.nl | data.overheid.nl is a national government open-data portal for Netherlands running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approxim... | 1 | minimal |
| data.sa.gov.au South Australia | data.sa.gov.au South Australia is a state government open-data portal for Australia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over... | 1 | minimal |
| data.zagreb.hr Official Open Data Portal | data.zagreb.hr Official Open Data Portal is a open data portal open-data portal for Croatia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interf... | 1 | minimal |
| dati.emilia-romagna.it | dati.emilia-romagna.it is a open data portal open-data portal for Italy running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximate... | 1 | minimal |
| dati.gov.it | dati.gov.it is a national government open-data portal for Italy running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 65,38... | 1 | minimal |
| datos.gob.mx - Sitio oficial de datos abiertos del Gobierno de la República | datos.gob.mx - Sitio oficial de datos abiertos del Gobierno de la República is a open data portal open-data portal for Mexico running CKAN. It exposes the CKAN catalog API, a st... | 1 | minimal |
| datos.gub.uy - Catálogo de Datos Abiertos | datos.gub.uy - Catálogo de Datos Abiertos is a open data portal open-data portal running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over ap... | 1 | minimal |
| datos.misiones.gov.ar | datos.misiones.gov.ar is a open data portal open-data portal for Argentina running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approxim... | 1 | minimal |
| e-Gov Data Catalog | e-Gov Data Catalog is a national government open-data portal for Japan running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximatel... | 1 | minimal |
| gov.il | gov.il is a open data portal open-data portal for isr running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 1,194 datasets,... | 1 | minimal |
| open NRW | open NRW is a open data portal open-data portal for Germany running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 10,579 da... | 1 | minimal |
| opendata.gov.je | opendata.gov.je is a open data portal open-data portal for JE running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately 118 dat... | 1 | minimal |
| opendata.swiss | opendata.swiss is a national government open-data portal for Switzerland running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximat... | 1 | minimal |
| Election Assistance Commission | The U.S. Election Assistance Commission (EAC) was established by the Help America Vote Act of 2002 (HAVA). The EAC is an independent, bipartisan commission charged with developi... | 1 | minimal |
| National Endowment for the Humanities | The National Endowment for the Humanities (NEH) is the nation's largest public funder of the humanities, which include history, philosophy, literature, language, ethics, law, ar... | 1 | minimal |
| Public Sector | Industry-vertical index for the public-sector / government API landscape across U.S. federal, state, and local levels. Catalogs the federal API gateway api.data.gov (operated by... | 21 | minimal |
| 18F | Unofficial US Federal Government API Development | 1 | minimal |
| API Setu | An Indian Government platform that provides a lot of APIS for KYC, business, education & employment | 1 | minimal |
| AcreLens | Land suitability scoring API for any US property: off-grid, rural, recreational, investment | 1 | minimal |
| Archive.org | The Internet Archive | 1 | minimal |
| Black History Facts | Contribute or search one of the largest black history fact databases on the web | 1 | minimal |
| BotsArchive | JSON formatted details about Telegram Bots available in database | 1 | minimal |
| Callook.info | United States ham radio callsigns | 1 | minimal |
| CollegeScoreCard.ed.gov | Data on higher education institutions in the United States | 1 | minimal |
| Enigma Public | Broadest collection of public data | 1 | minimal |
| French Address Search | Address search via the French Government | 1 | minimal |
| GENESIS | Federal Statistical Office Germany | 1 | minimal |
| Joshua Project | People groups of the world with the fewest followers of Christ | 1 | minimal |
| Kaggle | Create and interact with Datasets, Notebooks, and connect with Kaggle | 1 | minimal |
| LinkPreview | Get JSON formatted summary with title, description and preview image for any requested URL | 1 | minimal |
| Lowy Asia Power Index | Get measure resources and influence to rank the relative power of states in Asia | 1 | minimal |
| Microlink.io | Extract structured data from any website | 1 | minimal |
| ModelPartFinder Error Codes | Lookup appliance and equipment error codes by brand and code, with recommended replacement parts | 1 | minimal |
| Nasdaq Data Link | Stock market data | 1 | minimal |
| Nobel Prize | Open data about nobel prizes and events | 1 | minimal |
| Onyx Bazaar | Free public leaderboard of x402 paid HTTP services indexed from Coinbase CDP discovery API | 1 | minimal |
| Open Data Minneapolis | Spatial (GIS) and non-spatial city data for Minneapolis | 1 | minimal |
| OpenCorporates | Data on corporate entities and directors in many countries | 1 | minimal |
| OpenSanctions | Data on international sanctions, crime and politically exposed persons | 1 | minimal |
| PeakMetrics | News articles and public datasets | 1 | minimal |
| Recreation Information Database | Recreational areas, federal lands, historic sites, museums, and other attractions/resources(US) | 1 | minimal |
| Scoop.it | Content Curation Service | 1 | minimal |
| Socrata | Access to Open Data from Governments, Non-profits and NGOs around the world | 1 | minimal |
| Teleport | Quality of Life Data | 1 | minimal |
| UPC database | More than 1.5 million barcode numbers from all around the world | 1 | minimal |
| Umeå Open Data | Open data of the city Umeå in northen Sweden | 1 | minimal |
| Universities List | University names, countries and domains | 1 | minimal |
| University of Oslo | Courses, lecture videos, detailed information for courses etc. for the University of Oslo (Norway) | 1 | minimal |
| Urban Observatory | The largest set of publicly available real time urban data in the UK | 1 | minimal |
| Voidly | Internet censorship measurements, incidents, and ISP-level blocking data across 126 countries | 1 | minimal |
| openAFRICA | Large datasets repository of African open data | 1 | minimal |
APIs in this industry (1001)
Showing 200 of 1001 — search the full set on apis.io.
18F
18F
Unofficial US Federal Government API Development
2020 Police Brutality API
2020 Police Brutality
This repository accumulates and contextualizes evidence of police brutality during the 2020 George Floyd protests. Data is available as J...
API Setu
API Setu
An Indian Government platform that provides a lot of APIS for KYC, business, education & employment
Aalto API Gateway
Aalto University
Aalto's 3scale-based API gateway exposing open interfaces about Aalto and its operations, sourced from systems such as Oodi and ASIO. Acc...
Aaltodoc Repository (OAI-PMH and REST)
Aalto University
Aaltodoc is Aalto University's DSpace-based institutional repository of theses, articles, conference publications, and research materials...
Linked Open Aalto Data (SPARQL)
Aalto University
Open data published by Aalto University expressed as Linked Data, offering a public SPARQL query endpoint, a Linked Data browser, and dow...
Open Courses API (SISU)
Aalto University
Course-data API exposed through the Aalto API Gateway, providing course and realization information from the SISU student information sys...
Course Catalogue and Timetable (mitstudie / STADS)
Aarhus University
Public course catalogue (kursuskatalog.au.dk) and the mitstudie.au.dk / STADS student self-service environment, which provides web-based ...
Pure OAI-PMH Metadata Service
Aarhus University
OAI-PMH metadata harvesting service for the Aarhus University Pure research portal, used to expose and harvest research-output metadata. ...
Pure Research Portal Web Service (REST)
Aarhus University
Elsevier Pure research information system for Aarhus University exposing a web-service / REST API for research outputs, persons, projects...
SEC EDGAR XBRL API
Accounting Standards
The SEC EDGAR XBRL APIs provide free, real-time access to structured financial data from public company filings. APIs include company sub...
AcreLens
AcreLens
Land suitability scoring API for any US property: off-grid, rural, recreational, investment
AGID Program Data Portal
Administration for Community Living (ACL)
The AGing, Independence, and Disability (AGID) Program Data Portal provides publicly accessible data from programs funded under the Older...
ANA Projects Report Dataset
Administration for Native Americans (ANA)
The ANA Projects Report dataset provides results and impact analysis for ANA-funded projects in Native American communities. Available th...
Equal Access to Justice Act (EAJA) Database
Administrative Conference of the United States
ACUS maintains an online database of Equal Access to Justice Act (EAJA) awards, tracking awards of attorney's fees and other costs agains...
Federal Administrative Adjudication Database
Administrative Conference of the United States
A joint project between ACUS and Stanford Law School, the Federal Administrative Adjudication Database provides comprehensive data on fed...
PACER Authentication API
Administrative Office of the U.S. Courts
The PACER Authentication API allows users to authenticate automatically and without a user interface, facilitating programmatic access fo...
PACER Case Locator (PCL) API
Administrative Office of the U.S. Courts
The PACER Case Locator (PCL) API is a REST API providing programmatic access to a nationwide index of federal court cases across all Fede...
USDA NASS Crop CASMA API
Agricultural Statistics Service
The Crop CASMA API provides programmatic access to crop vegetation and soil moisture conditions using NASA SMAP and MODIS satellite data ...
USDA NASS CroplandCROS API
Agricultural Statistics Service
The CroplandCROS API provides access to the Cropland Data Layer (CDL), a crop-specific land cover data layer with 30-meter spatial resolu...
USDA NASS QuickStats API
Agricultural Statistics Service
The QuickStats API provides direct programmatic access to the statistical information contained in the NASS Quick Stats database, coverin...
USDA NASS VegScape API
Agricultural Statistics Service
The VegScape API delivers vegetation condition indices at 250-meter spatial resolution covering the continental United States. Data inclu...
AQICN JSON Air Quality API
Air Quality Programmatic APIs
JSON API returning real-time AQI station data by city name, station name, geographic coordinates, or IP geolocation. Includes pollutant b...
AQICN Real-Time Air Quality API
Air Quality Programmatic APIs
Real-time and forecast air quality data from 11,000+ monitoring stations globally. Returns AQI measurements for PM2.5, PM10, NO2, CO, SO2...
Alberta CKAN Action API
Alberta
CKAN Action API for Alberta, a consistent JSON-over-HTTP interface over a catalog of 33,436 datasets. Standard actions include package_se...
TTB COLA Registry
Alcohol and Tobacco Tax and Trade Bureau
The TTB Public COLA (Certificate of Label Approval) Registry provides access to approved alcohol beverage labels. Users and industry memb...
TTB Open Data API
Alcohol and Tobacco Tax and Trade Bureau
The TTB Open Data API provides programmatic access to TTB statistical and regulatory datasets via the Socrata Open Data API (SODA). Avail...
AmeriCorps Open Data SODA API
AmeriCorps
The AmeriCorps Open Data portal provides programmatic access to AmeriCorps research, evaluation, and program datasets via the Socrata Ope...
AmeriGEOSS Community Platform CKAN Action API
AmeriGEOSS Community Platform
CKAN Action API for AmeriGEOSS Community Platform, a consistent JSON-over-HTTP interface over a catalog of 645,296 datasets. Standard act...
ABMC We Remember Burial Search
American Battle Monuments Commission
The ABMC We Remember portal provides a searchable database of more than 200,000 fallen U.S. service members buried or commemorated at Ame...
An API of Ice And Fire
An API of Ice And Fire
Read-only REST API exposing Books, Characters, and Houses from the A Song of Ice and Fire universe. All resources are hypermedia objects ...
Analyze Boston CKAN Action API
Analyze Boston
CKAN Action API for Analyze Boston, a consistent JSON-over-HTTP interface over a catalog of 231 datasets. Standard actions include packag...
ARC Data Report Tool
Appalachian Regional Commission
The ARC Data Report Tool provides state- and county-level data for the entire Appalachian Region across six topic areas comparing Appalac...
Aragón Open Data CKAN Action API
Aragón Open Data
CKAN Action API for Aragón Open Data, a consistent JSON-over-HTTP interface over a catalog of 2,429 datasets. Standard actions include pa...
Archive.org
Archive.org
The Internet Archive
ASU Course Catalog & Class Search
Arizona State University
ASU publishes a public course catalog and class search at catalog.apps.asu.edu (with a legacy interface at webapp4.asu.edu). It provides ...
ASU Library Research Data Repository API
Arizona State University
The ASU Library Research Data Repository runs on the open-source Dataverse platform (verified version 6.10.1) and exposes Dataverse's nat...
ASU Research Data Repository OAI-PMH
Arizona State University
The ASU Library Research Data Repository Dataverse OAI Archive exposes an OAI-PMH 2.0 metadata harvesting endpoint. The Identify verb res...
ASU WebAuth (CAS / Shibboleth SSO)
Arizona State University
ASU operates an enterprise single sign-on service using the Central Authentication Service (CAS) protocol with Shibboleth/SAML federation...
Art Institute of Chicago Public API
Art Institute of Chicago
Open REST and search API surfacing the museum's collection, agents, exhibitions, tours, publications, products and operational data (gall...
Bulk Data Dumps
Art Institute of Chicago
Nightly data dumps of the collection and related resources, published as JSON in a public GitHub repository. Recommended for bulk consume...
IIIF Image API
Art Institute of Chicago
IIIF Image API 2.0-compliant service for delivering image binaries for artworks. Combine artwork.image_id with config.iiif_url returned b...
NASA Open APIs
Artemis
NASA's Open API platform at api.nasa.gov provides programmatic access to NASA data including the Astronomy Picture of the Day (APOD), Nea...
ANU Open Research OAI-PMH
Australian National University
OAI-PMH (Protocol for Metadata Harvesting) v2.0 endpoint for ANU's Open Research institutional repository (DSpace), exposing metadata for...
QRNG@ANU Quantum Random Numbers API
Australian National University
Public API serving live quantum random numbers generated by ANU's quantum optics research group. The legacy JSON endpoint returns arrays ...
CSUC Research Data Repository (CORA RDR)
Autonomous University of Barcelona
UAB research data is published via the Catalan Consortium of University Services (CSUC) federated, multidisciplinary research data reposi...
Aviation Weather Data API
Aviation Weather Center
Public REST API exposing operational aviation weather products produced by the NOAA/NWS Aviation Weather Center. Endpoints cover decoded ...
Avoindata.fi CKAN Action API
Avoindata.fi
CKAN Action API for Avoindata.fi, a consistent JSON-over-HTTP interface over a catalog of 2,521 datasets. Standard actions include packag...
BBVA Locations API
BBVA
Open data API providing access to BBVA branch and ATM location data. Available for Spain and Mexico, this API returns geolocation data, o...
BC Data Catalogue CKAN Action API
BC Data Catalogue
CKAN Action API for BC Data Catalogue, a consistent JSON-over-HTTP interface over a catalog of 3,346 datasets. Standard actions include p...
BMW Open Data Platform
BMW
The BMW Open Data Platform provides developers, researchers, and innovators with access to vehicle data including performance metrics, se...
BODIK ODCS CKAN Action API
BODIK ODCS
CKAN Action API for BODIK ODCS, a consistent JSON-over-HTTP interface over a catalog of 17,545 datasets. Standard actions include package...
Barnet Open Data CKAN Action API
Barnet Open Data
CKAN Action API for Barnet Open Data, a consistent JSON-over-HTTP interface over a catalog of an open datasets. Standard actions include ...
Bienvenido a OpenData UGR CKAN Action API
Bienvenido a OpenData UGR
CKAN Action API for Bienvenido a OpenData UGR, a consistent JSON-over-HTTP interface over a catalog of 65 datasets. Standard actions incl...
Black History Facts
Black History Facts
Contribute or search one of the largest black history fact databases on the web
AI API Access (Azure OpenAI / Amazon Bedrock)
Boston University
Boston University IS&T provides gated access to Large Language Model API keys for academic and research use, brokering frontier models vi...
OpenBU Repository OAI-PMH API
Boston University
OpenBU is Boston University Libraries' open-access institutional repository, built on DSpace. It exposes a publicly accessible OAI-PMH 2....
BotsArchive
BotsArchive
JSON formatted details about Telegram Bots available in database
Boycott Israeli Consumer Goods Dataset
Boycott Israeli Consumer Goods Dataset
Collating all consumer boycott and alternatives data into a single, golden-source, version-controlled repository consumable by software p...
British Columbia (DataBC) CKAN Action API
British Columbia (DataBC)
CKAN Action API for British Columbia (DataBC), a consistent JSON-over-HTTP interface over a catalog of 3,346 datasets. Standard actions i...
BC Data Catalogue CKAN API
British Columbia Data Catalogue
The BC Data Catalogue exposes a CKAN v3 REST API at https://catalogue.data.gov.bc.ca/api/3/action/ providing programmatic access to BC go...
Buenos Aires Data CKAN Action API
Buenos Aires Data
CKAN Action API for Buenos Aires Data, a consistent JSON-over-HTTP interface over a catalog of 451 datasets. Standard actions include pac...
Bureau of Consular Affairs Data Catalog (CKAN API)
Bureau of Consular Affairs
The CA Data Catalog provides access to datasets from the Bureau of Consular Affairs via the CKAN API. It includes passport issuance stati...
Indian Affairs GIS Open Data
Bureau of Indian Affairs
The Indian Affairs GIS Open Data Hub publishes authoritative geospatial datasets as downloadable and machine-readable resources via Esri ...
BJS NCVS API
Bureau of Justice Statistics Data Analysis Tools
The National Crime Victimization Survey (NCVS) API exposes selected NCVS datasets via the Socrata Open Data API. Datasets are addressed b...
BJS NIBRS National Estimates API
Bureau of Justice Statistics Data Analysis Tools
The NIBRS National Estimates API publishes selected National Incident-Based Reporting System national-estimates datasets via the Socrata ...
BLS Public Data API
Bureau of Labor Statistics
The BLS Public Data API is the agency's public REST + JSON service for retrieving published historical time series across every BLS progr...
BTS Freight Analysis Framework (FAF)
Bureau of Transportation Statistics
The Freight Analysis Framework integrates data from multiple sources to create a comprehensive picture of freight flows to, from, within,...
BTS Open Data SODA API
Bureau of Transportation Statistics
The BTS Open Data portal powered by Socrata provides programmatic access to transportation datasets via the Socrata Open Data API (SODA)....
TranStats - Airline On-Time Performance Data
Bureau of Transportation Statistics
TranStats is BTS's aviation and transportation statistics database providing flight on-time performance data, carrier and airport snapsho...
CKAN Demo CKAN Action API
CKAN Demo
CKAN Action API for CKAN Demo, a consistent JSON-over-HTTP interface over a catalog of 13 datasets. Standard actions include package_sear...
CMS AB2D API
CMS — Centers for Medicare & Medicaid Services
AB2D (Claim and Claim Line Feed) delivers Medicare Parts A, B, and D claims data to Part D prescription drug plan sponsors via the HL7 FH...
CMS Beneficiary Claims Data API (BCDA)
CMS — Centers for Medicare & Medicaid Services
BCDA enables Medicare Shared Savings Program Accountable Care Organizations (ACOs) to retrieve bulk Medicare Parts A, B, and D claims dat...
CMS Beneficiary FHIR Data Server (BFD)
CMS — Centers for Medicare & Medicaid Services
The Beneficiary FHIR Data (BFD) Server is the upstream HL7 FHIR R4 service that powers Blue Button 2.0, BCDA, AB2D, and DPC. BFD ingests ...
CMS Blue Button 2.0 API
CMS — Centers for Medicare & Medicaid Services
Blue Button 2.0 is a developer-friendly, OAuth 2.0-enabled, HL7 FHIR R4 standard data API that delivers Medicare Part A, B, and D claims ...
CMS Data at the Point of Care API (DPC)
CMS — Centers for Medicare & Medicaid Services
Data at the Point of Care fills gaps in patient history by delivering Medicare claims data via HL7 FHIR Bulk Data Access to fee-for-servi...
CMS Marketplace API
CMS — Centers for Medicare & Medicaid Services
The Marketplace API exposes Qualified Health Plan (QHP) and Stand-alone Dental Plan (SADP) data from healthcare.gov including plan finder...
CMS Medicare Coverage Database API
CMS — Centers for Medicare & Medicaid Services
The Medicare Coverage Database (MCD) exposes National Coverage Determinations (NCDs), Local Coverage Determinations (LCDs), Local Coverag...
CMS Open Data API (data.cms.gov)
CMS — Centers for Medicare & Medicaid Services
The CMS Open Data API exposes the full catalog of public CMS datasets — Medicare provider utilization and payment files, Medicare Advanta...
CMS Provider Data Catalog API
CMS — Centers for Medicare & Medicaid Services
The Provider Data Catalog API surfaces the quality and compare datasets that powered the legacy Hospital Compare, Nursing Home Compare, H...
CMS Quality Payment Program API
CMS — Centers for Medicare & Medicaid Services
The Quality Payment Program (QPP) API supports the Merit-based Incentive Payment System (MIPS) and Advanced Alternative Payment Models (A...
CNCF Cloud Native Interactive Landscape
CNCF
The CNCF Cloud Native Interactive Landscape is the canonical map of the cloud-native ecosystem. The landscape is generated daily from lan...
Calderdale Data Works CKAN Action API
Calderdale Data Works
CKAN Action API for Calderdale Data Works, a consistent JSON-over-HTTP interface over a catalog of an open datasets. Standard actions inc...
California Health and Human Services CKAN Action API
California Health and Human Services
CKAN Action API for California Health and Human Services, a consistent JSON-over-HTTP interface over a catalog of 481 datasets. Standard ...
CaltechDATA OAI-PMH
California Institute of Technology
OAI-PMH metadata harvesting endpoint for CaltechDATA, enabling programmatic harvesting of repository metadata records. Verified live via ...
CaltechDATA REST API
California Institute of Technology
Public REST API for CaltechDATA, the Caltech institutional research data repository built on InvenioRDM. Supports querying and retrieving...
IRSA Virtual Observatory APIs (IPAC)
California Institute of Technology
Caltech/IPAC NASA Infrared Science Archive (IRSA) exposes IVOA-standard Virtual Observatory APIs, including Table Access Protocol (TAP), ...
California Natural Resources Agency CKAN Action API
California Natural Resources Agency
CKAN Action API for California Natural Resources Agency, a consistent JSON-over-HTTP interface over a catalog of 21,080 datasets. Standar...
California Open Data CKAN Action API
California Open Data
CKAN Action API for California Open Data, a consistent JSON-over-HTTP interface over a catalog of 4,456 datasets. Standard actions includ...
Callook.info
Callook.info
United States ham radio callsigns
NCI Clinical Trials Search API
Cancer.gov
RESTful API that lets developers build applications, search tools, and digital platforms over NCI-supported cancer clinical trials data s...
NCI Content Syndication Services
Cancer.gov
A suite of syndicated content channels — RSS feeds, the NCI Dictionary Widget, and syndicated publication content — that partner sites an...
NCI EVS Terminology API
Cancer.gov
Enterprise Vocabulary Services (EVS) exposes NCI Thesaurus and NCI Metathesaurus content — over 192,000 concepts, 154,000 textual definit...
NCI Genomic Data Commons (GDC) API
Cancer.gov
The external-facing REST interface for the NCI Genomic Data Commons. Drives the GDC Data Portal and GDC Submission Portal and is open for...
NCI MoDaC API
Cancer.gov
The NCI Model and Data Clearinghouse (MoDaC) API provides programmatic access to cancer research data, computational models, and associat...
NCI SEER API
Cancer.gov
RESTful API for the Surveillance, Epidemiology, and End Results (SEER) Program. Supports SEER datasets plus staging APIs for cancer stagi...
Courses
Cardiff University
The Courses API provides a simple interface for applications that want to retrieve lists of courses or information relating to a specific...
EchoTest
Cardiff University
An echo/test utility API published on Cardiff University's developer portal, typically used to verify connectivity and credentials agains...
Lookups
Cardiff University
The Lookups API provides reference/lookup data used across Cardiff University's institutional APIs (for example code lists used to filter...
Modules
Cardiff University
The Modules API exposes information about academic modules offered at Cardiff University via the institutional developer portal. OAuth2-s...
Publications
Cardiff University
The Publications API provides a simple interface for applications that want to retrieve lists of publications or information relating to ...
CMU Web Login (Shibboleth SSO)
Carnegie Mellon University
Carnegie Mellon's campus-wide single sign-on identity service based on Shibboleth/SAML, used by service providers to authenticate authori...
Delphi Epidata API
Carnegie Mellon University
Public, anonymously accessible HTTP/JSON API maintained by the Carnegie Mellon University Delphi research group providing real-time and h...
KiltHub Repository OAI-PMH (figshare)
Carnegie Mellon University
OAI-PMH metadata harvesting endpoint for CMU's KiltHub institutional repository, the University Libraries' platform for research data and...
CenterPoint Energy Green Button Connect My Data
CenterPoint Energy
CenterPoint Energy has committed to the Green Button initiative, providing customers and authorized third parties with secure download an...
CDC Environmental Public Health Tracking Network API
Centers for Disease Control and Prevention
The Environmental Public Health Tracking Network API provides a REST interface over the National Tracking Network's JSON-formatted data f...
CDC NNDSS / MMWR Socrata Data
Centers for Disease Control and Prevention
The National Notifiable Diseases Surveillance System (NNDSS) and Morbidity and Mortality Weekly Report (MMWR) tables are published as Soc...
CDC Open Technology API Index
Centers for Disease Control and Prevention
open.cdc.gov is CDC's Open Technology landing site that indexes the agency's public APIs, open-source GitHub repositories, and open data ...
CDC PLACES / 500 Cities API
Centers for Disease Control and Prevention
PLACES (Population Level Analysis and Community Estimates) provides model-based small-area estimates for chronic disease risk factors, he...
CDC Public Health Media Library (Content Syndication)
Centers for Disease Control and Prevention
The CDC Public Health Media Library Content Syndication API lets developers and partner sites programmatically retrieve CDC health conten...
CDC Socrata Open Data API (data.cdc.gov)
Centers for Disease Control and Prevention
The CDC Socrata Open Data API (SODA) provides programmatic JSON, CSV, and GeoJSON access to hundreds of data.cdc.gov datasets covering CO...
CDC WONDER API
Centers for Disease Control and Prevention
CDC WONDER (Wide-ranging ONline Data for Epidemiologic Research) is a suite of public-use ad-hoc query databases covering underlying and ...
CMS Beneficiary Claims Data API (BCDA)
Centers for Medicare and Medicaid Services
The Beneficiary Claims Data API (BCDA) is a Bulk FHIR API that delivers Medicare Part A, B, and D claims data to Medicare Shared Savings ...
CMS Blue Button 2.0 API
Centers for Medicare and Medicaid Services
Blue Button 2.0 is a standards-based HL7 FHIR R4 API that delivers Medicare Part A, B, and D claims data for over 60 million beneficiarie...
CMS Data at the Point of Care (DPC) API
Centers for Medicare and Medicaid Services
Data at the Point of Care is a FHIR Bulk Data API that delivers Original Medicare claims data to fee-for-service providers for the patien...
CMS Provider Data Catalog API (Care Compare)
Centers for Medicare and Medicaid Services
The Provider Data Catalog API (formerly Hospital Compare) exposes the Medicare.gov Care Compare datasets including Hospital, Nursing Home...
CMS Quality Payment Program (QPP) Measures API
Centers for Medicare and Medicaid Services
The Quality Payment Program Measures Data repository and REST API publish machine-readable specifications of MIPS quality, promoting inte...
CMS Socrata Open Data API (data.cms.gov)
Centers for Medicare and Medicaid Services
data.cms.gov hosts hundreds of CMS datasets including Medicare Fee-for-Service utilization and payment data, Provider of Services files, ...
Healthcare.gov Marketplace API
Centers for Medicare and Medicaid Services
The Healthcare.gov Marketplace API and accompanying Open Data Plan Finder exposes Qualified Health Plan (QHP) details, plan attributes, p...
Medicare Coverage Database (MCD) API
Centers for Medicare and Medicaid Services
The Medicare Coverage Database publishes National Coverage Determinations (NCDs), Local Coverage Determinations (LCDs), articles, and cod...
NPPES NPI Registry API
Centers for Medicare and Medicaid Services
The NPPES NPI Registry API provides free public access to look up active National Provider Identifier records for individual and organiza...
CIA Careers Portal
Central Intelligence Agency
The CIA Careers portal is the agency's public recruiting site, listing open positions across analysis, operations, science and technology...
CIA FOIA Electronic Reading Room (CREST)
Central Intelligence Agency
The CIA's FOIA Electronic Reading Room (CREST - CIA Records Search Tool) is a publicly searchable interface to declassified CIA records r...
CIA Museum Digital Collection
Central Intelligence Agency
The CIA Museum digital collection is the public-facing online catalog of artifacts, exhibits, and stories from the CIA Museum, including ...
CIA Public Website
Central Intelligence Agency
The CIA's primary public-facing website at cia.gov hosts agency news stories, leadership biographies, mission statements, careers and rec...
CIA World Factbook (Country Profiles)
Central Intelligence Agency
The CIA World Factbook is the long-running unclassified almanac of reference information on 260 world entities including all sovereign co...
Studies in Intelligence Journal
Central Intelligence Agency
Studies in Intelligence is the CIA's professional journal published by the Center for the Study of Intelligence (CSI). The site provides ...
Chalmers Open Digital Repository (ODR) OAI-PMH
Chalmers University of Technology
OAI-PMH 2.0 metadata harvesting interface for the Chalmers Open Digital Repository (ODR), which holds student theses and selected special...
Chalmers Research API
Chalmers University of Technology
Public API serving research information from the Chalmers Research portal, including research projects, publications, funders and collabo...
Chalmers Research OAI-PMH
Chalmers University of Technology
OAI-PMH 2.0 metadata harvesting interface for the Chalmers Research portal (research.chalmers.se), covering Chalmers research publication...
CU Digital Repository OAI-PMH
Charles University
The Charles University Digital Repository (Digitalni repozitar UK), a DSpace-based institutional repository, exposes a public OAI-PMH 2.0...
CU Research Publications Repository OAI-PMH
Charles University
The Charles University Research Publications Repository is a DSpace-based institutional archive where staff and students self-archive res...
LINDAT Machine Translation API
Charles University
Public REST API for neural machine translation operated by the Institute of Formal and Applied Linguistics (UFAL) at Charles University a...
LINDAT NameTag API
Charles University
Public REST API for named-entity recognition and tokenization (NameTag) operated by the Institute of Formal and Applied Linguistics (UFAL...
Chess.com Published Data API
Chess.com
Public, unauthenticated REST API exposing player profiles, monthly game archives (with PGN download), club rosters, daily and live team m...
CTA Bus Tracker API
Chicago Transit Authority
The Bus Tracker API series provides real-time bus arrival predictions, vehicle locations, route patterns, route lists, and stop directori...
CTA Customer Alerts API
Chicago Transit Authority
The Customer Alerts API delivers real-time service status, planned outages, and disruption information for CTA bus and rail services. It ...
CTA GTFS Schedule Feed
Chicago Transit Authority
CTA publishes a GTFS (General Transit Feed Specification) schedule feed covering the physical layout, stop locations, and static schedule...
CTA Train Tracker API
Chicago Transit Authority
The Train Tracker API provides real-time train arrival predictions and run/location information for all CTA L train lines. Endpoints incl...
PaymentAccuracy.gov (Payment Integrity)
Chief Financial Officers Council
PaymentAccuracy.gov is the OMB-maintained transparency site for reporting government-wide improper payments and payment-integrity activit...
USAspending.gov API (Treasury)
Chief Financial Officers Council
USAspending.gov is the Treasury-operated public source of accountable federal spending data, exposing a comprehensive REST API for federa...
CHOP FHIR R4 API
Children's Hospital of Philadelphia
The Children's Hospital of Philadelphia FHIR Server. Epic (November 2025) on the back end, conforming to US Core 6.1.0 and the HL7 Bulk D...
D3b Data Sharing Platforms
Children's Hospital of Philadelphia
The Center for Data Driven Discovery in Biomedicine (D3b) at CHOP operates the open research data infrastructure for pediatric cancer and...
DBHi Biomedical and Health Informatics
Children's Hospital of Philadelphia
CHOP's Department of Biomedical and Health Informatics (DBHi) maintains 168 public repositories covering health data infrastructure, EHR ...
Link2CHOP Referring Physician Portal
Children's Hospital of Philadelphia
Internet-based portal for referring physician offices that provides real-time, read-only access to the CHOP Epic EMR. Surfaces discharge ...
MyCHOP Patient Portal
Children's Hospital of Philadelphia
MyChart-based patient portal that gives patients, parents and guardians access to virtual medical records, lab results, secure messaging,...
City of Milan Open Data CKAN Action API
City of Milan Open Data
CKAN Action API for City of Milan Open Data, a consistent JSON-over-HTTP interface over a catalog of 2,594 datasets. Standard actions inc...
City of San Jose CKAN Action API
City of San Jose
CKAN Action API for City of San Jose, a consistent JSON-over-HTTP interface over a catalog of 170 datasets. Standard actions include pack...
City of Toronto Open Data CKAN Action API
City of Toronto Open Data
CKAN Action API for City of Toronto Open Data, a consistent JSON-over-HTTP interface over a catalog of 543 datasets. Standard actions inc...
AACT Database
ClinicalTrials.gov
AACT (Aggregate Analysis of ClinicalTrials.gov) is a publicly available relational database of all ClinicalTrials.gov study content maint...
ClinicalTrials.gov Bulk Downloads
ClinicalTrials.gov
ClinicalTrials.gov provides bulk CSV and JSON downloads of the full study registry through the data-api download endpoints. These artifac...
ClinicalTrials.gov Classic API
ClinicalTrials.gov
The Classic API is the legacy ClinicalTrials.gov interface that preceded the Data API v2 and exposes full-study, brief-study, and field-v...
ClinicalTrials.gov Data API v2
ClinicalTrials.gov
The ClinicalTrials.gov Data API v2 is the modern public REST interface to the NIH clinical-studies registry. It exposes study records, st...
Data Marketplaces
Cloud Storage and Data Acquisition
Data marketplaces and open-data registries expose third-party datasets through REST APIs, subscription delivery, and shared buckets. They...
CollegeScoreCard.ed.gov
CollegeScoreCard.ed.gov
Data on higher education institutions in the United States
CLIO Library Catalog Open Data
Columbia University
Columbia University Libraries publishes its catalog (bibliographic and holdings data from the Integrated Library System behind CLIO) as o...
CU Directory of Classes
Columbia University
Public web directory of Columbia University class offerings, browsable by subject, department, semester, instruction method, weekday and ...
Columbia Identity (CAS / Shibboleth SAML)
Columbia University
Columbia University Information Technology (CUIT) provides UNI-based web authentication and federation. CAS (Central Authentication Servi...
Columbia Open Data Service
Columbia University
Central university service publishing data feeds to software developers in programming-friendly formats such as JSON and XML (including t...
CFTC Bank Participation and Large Trader Reports
Commodity Futures Trading Commission
The CFTC publishes monthly Bank Participation reports and other aggregate large trader reports that complement the weekly COT data. These...
CFTC Commitments of Traders SODA API
Commodity Futures Trading Commission
Programmatic access to the CFTC Commitments of Traders weekly reports via the Socrata Open Data API hosted at publicreporting.cftc.gov. D...
CFTC Swap Data Repositories
Commodity Futures Trading Commission
The CFTC oversees Swap Data Repositories (SDRs) that collect and maintain swap transaction records as required by the Dodd-Frank Act. SDR...
Docta Complutense Institutional Repository
Complutense University of Madrid
Docta Complutense is UCM's open-access institutional repository, migrated in 2023 to DSpace 7. As a DSpace platform it underpins open-acc...
UniversiDATA CKAN Dataset API
Complutense University of Madrid
CKAN-compatible metadata API of the UniversiDATA platform. Lists datasets and resources and returns dataset/resource metadata, including ...
UniversiDATA DCAT Catalog API
Complutense University of Madrid
DCAT catalog API of UniversiDATA, exposing the dataset catalog per participating university. The UCM catalog is reachable via the univers...
UniversiDATA DataStore API
Complutense University of Madrid
DataStore query API of the UniversiDATA open-data platform (DKAN), of which Complutense University of Madrid is a founding participant. R...
CBO Budget and Economic Data
Congressional Budget Office
Downloadable budget and economic data accompanying CBO's Budget and Economic Outlook reports. Includes 10-year projections of revenues, o...
CBO Cost Estimates
Congressional Budget Office
CBO publishes cost estimates for legislation under consideration by Congress, covering both direct spending and revenue impact and includ...
CBO Publications RSS Feeds
Congressional Budget Office
CBO publishes RSS feeds for its publications, including reports, cost estimates, blog posts, working papers, and presentations. RSS is th...
Consumer Complaint Database API
Consumer Financial Protection Bureau
Public REST + JSON search API for the Consumer Complaint Database, a daily-updated record of complaints submitted by U.S. consumers about...
HMDA Data Browser API
Consumer Financial Protection Bureau
The HMDA Data Browser API exposes Home Mortgage Disclosure Act submission data with both nationwide and filtered (LEI, state, county, MSA...
HMDA Institutions API
Consumer Financial Protection Bureau
Returns the financial institutions registered to file HMDA data with the CFPB, keyed by year and Legal Entity Identifier (LEI). Used by f...
CPSC Recalls API
Consumer Product Safety Commission
Public REST web service that returns CPSC recall records published on cpsc.gov. Supports case-insensitive wildcard search across recall n...
SaferProducts.gov OData API
Consumer Product Safety Commission
OData web service exposing publicly published consumer product incident-report data submitted through SaferProducts.gov. Authenticated wi...
Open Beauty Facts
Consumer Products
Open Beauty Facts is the Open Food Facts sister project covering cosmetics and personal care products. The same REST shape exposes ingred...
Open Food Facts
Consumer Products
Open Food Facts is a collaborative, free, open database of food products from around the world maintained by a global community of contri...
Cork City Open Data CKAN Action API
Cork City Open Data
CKAN Action API for Cork City Open Data, a consistent JSON-over-HTTP interface over a catalog of 32 datasets. Standard actions include pa...
Cornell Class Roster API
Cornell University
Public read-only API (version 2.0) for Cornell Class Roster data, providing scheduled classes with Course of Study details plus configura...
Cornell Open Data Initiative (CODI)
Cornell University
CODI is a student-led effort to publish open Cornell data including campus map points of interest, transit (TCAT) schedules and stops, di...
arXiv API
Cornell University
arXiv, hosted and stewarded by Cornell University, provides a long-running public API for programmatic search and retrieval of e-print me...
eCommons Digital Repository (DSpace REST and OAI-PMH)
Cornell University
eCommons is Cornell University Library's institutional repository, running on DSpace 7+. It exposes a public DSpace REST API for items, c...
Country.io Data API
Country.io
Country.io exposes six static JSON files under https://country.io. Each file is a flat object keyed by ISO 3166-1 alpha-2 country code an...
Curtin Research Data (via Research Data Australia)
Curtin University
Curtin University publishes research data collection records through the national Research Data Australia (RDA) registry operated by the ...
Curtin espace Institutional Repository
Curtin University
espace is Curtin University's open-access institutional repository of research publications and higher-degree-by-research theses, deliver...
DATA GO JP CKAN Action API
DATA GO JP
CKAN Action API for DATA GO JP, a consistent JSON-over-HTTP interface over a catalog of 18,366 datasets. Standard actions include package...
DATA.GOV.HK CKAN Action API
DATA.GOV.HK
CKAN Action API for DATA.GOV.HK, a consistent JSON-over-HTTP interface over a catalog of 218 datasets. Standard actions include package_s...
DOE NETL Energy Data Exchange CKAN Action API
DOE NETL Energy Data Exchange
CKAN Action API for DOE NETL Energy Data Exchange, a consistent JSON-over-HTTP interface over a catalog of 17,982 datasets. Standard acti...
Dados Abertos POA CKAN Action API
Dados Abertos POA
CKAN Action API for Dados Abertos POA, a consistent JSON-over-HTTP interface over a catalog of an open datasets. Standard actions include...
Dados RS CKAN Action API
Dados RS
CKAN Action API for Dados RS, a consistent JSON-over-HTTP interface over a catalog of 404 datasets. Standard actions include package_sear...
Dados abertos Distrito Federal CKAN Action API
Dados abertos Distrito Federal
CKAN Action API for Dados abertos Distrito Federal, a consistent JSON-over-HTTP interface over a catalog of 176 datasets. Standard action...
DMI Open Data API
Danish Meteorological Institutes
The DMI Open Data API provides access to four core public services - meteorological observations (metObs), climate data (climateData), oc...
DartAPI Developer Portal
Dartmouth College
DartAPI is Dartmouth's institutional API platform, documenting resource APIs such as the People API (directory information like name and ...
Dartmouth Chat AI API
Dartmouth College
An OpenAI-compatible REST API exposing large language models, embedding models, and reranking models deployed on Dartmouth's compute infr...
Dartmouth Open Data (ArcGIS Hub)
Dartmouth College
Dartmouth's public open-data portal built on ArcGIS Hub, providing geospatial and tabular datasets. Datasets are accessible through the s...
Data Commons BigQuery
Data Commons
SQL access to Data Commons through Google BigQuery enabling complex analytical queries and joins with private datasets.
Data Commons Google Sheets
Data Commons
Custom Google Sheets functions that pull Data Commons statistical data directly into spreadsheets without requiring an API key.
Data Commons MCP Server
Data Commons
Model Context Protocol server that lets AI agents query Data Commons conversationally, surfacing variables, places, and observations thro...
Data Commons Python Client
Data Commons
Official Python client library that wraps the Data Commons REST API with native Pandas DataFrame support for analytical workflows and not...
Data Commons REST API V2
Data Commons
HTTP REST interface for retrieving statistical observations, exploring the Data Commons knowledge graph, and resolving entities to Data C...
Data Commons Web Components
Data Commons
Drop-in JavaScript/HTML web components for embedding Data Commons charts, maps, rankings, and visualizations in any website.
Related industries
Education (120 shared)
Government & Public Sector (81 shared)
Healthcare & Life Sciences (11 shared)
Aerospace & Defense (6 shared)
Matched provider/API tags include Open Data, Open Government Data, Public Data.