| 18F | Unofficial US Federal Government API development resources and examples | No | ✗ | ? | |
| API Setu | Indian Government API platform offering KYC, business, education and employment data | No | ✓ | ✓ | |
| Archive.org | Access millions of free books, movies, software, music, and more from the Internet Archive | No | ✓ | ✗ | |
| Black History Facts | Search or contribute to one of the largest Black history fact databases online | apiKey | ✓ | ✓ | |
| BotsArchive | JSON formatted data about Telegram Bots indexed in the BotsArchive database | No | ✓ | ? | |
| Callook.info | Access US amateur radio callsign lookup data | No | ✓ | ? | |
| CARTO | Location intelligence and spatial data analysis API | apiKey | ✓ | ? | |
| CollegeScoreCard.ed.gov | US Department of Education open data about higher education institutions | No | ✓ | ? | |
| Enigma Public | Access one of the broadest collections of public datasets across domains | apiKey | ✓ | ✓ | |
| French Address Search | Search for French addresses using the official government geocoding API | No | ✓ | ? | |
| GENESIS | German Federal Statistical Office open data API for statistical datasets | OAuth | ✓ | ? | |
| Joshua Project | Open data on people groups and languages worldwide | apiKey | ✓ | ? | |
| Kaggle | Access datasets, notebooks, and competition metadata from Kaggle | apiKey | ✓ | ? | |
| LinkPreview | Fetch preview metadata (title, description, image) for any URL | apiKey | ✓ | ✓ | |
| Lowy Asia Power Index | Ranking and data for countries' power and influence in Asia | No | ✓ | ? | |
| Microlink.io | Extract structured data, metadata, and screenshots from any website | No | ✓ | ✓ | |
| Nasdaq Data Link | Official stock market and economic data API from Nasdaq | apiKey | ✓ | ? | |
| Nobel Prize | Open data API about Nobel laureates, prizes, and related events | No | ✓ | ✓ | |
| Open Data Minneapolis | City of Minneapolis GIS and statistical datasets | No | ✓ | ✗ | |
| openAFRICA | Largest open data repository for African countries and institutions | No | ✓ | ? | |
| OpenCorporates | Open database of corporate entities and directors globally | apiKey | ✓ | ? | |
| OpenSanctions | Data on international sanctions, crime, and politically exposed persons | No | ✓ | ✓ | |
| PeakMetrics | News articles and open public datasets with sentiment and trend analysis | apiKey | ✓ | ? | |
| Recreation Information Database | US Government open data about recreational areas, historic sites, and museums | apiKey | ✓ | ? | |
| Scoop.it | Content curation and discovery service API | apiKey | ✗ | ? | |
| Socrata | Global access to open data from governments, NGOs, and organizations | OAuth | ✓ | ✓ | |
| Teleport | Open API for quality of life and urban data from around the world | No | ✓ | ? | |
| Umeå Open Data | Public data portal for the city of Umeå, Sweden | No | ✓ | ✓ | |
| Universities List | Open dataset of universities with names, domains, and countries | No | ✓ | ? | |
| University of Oslo | University of Oslo API with courses, videos, and academic data | No | ✓ | ? | |
| UPC database | API containing over 1.5 million barcode entries from around the world | apiKey | ✓ | ? | |
| Urban Observatory | Real-time urban data and sensor information from UK cities | No | ✗ | ✗ | |
| Wikidata | Structured open knowledge base maintained by the Wikimedia Foundation | OAuth | ✓ | ? | |
| Wikipedia | MediaWiki API for Wikipedia content and metadata access | No | ✓ | ? | |
| Yelp | API for finding and reviewing local businesses | OAuth | ✓ | ? | |