Explore free Open Data APIs available for developers. Browse our collection of public APIs in the Open Data category, each verified and documented for easy integration into your projects.
Last verified: April 1, 2026
| Name | Description | Auth | HTTPS | CORS | Status |
|---|---|---|---|---|---|
| 18F | Unofficial US Federal Government API Development | none | No | unknown | dead |
| API Setu | An Indian Government platform that provides a lot of APIS for KYC, business, education & employment | none | Yes | yes | dead |
| Archive.org | The Internet Archive | none | Yes | no | alive |
| Black History Facts | Contribute or search one of the largest black history fact databases on the web | apikey | Yes | yes | alive |
| BotsArchive | JSON formatted details about Telegram Bots available in database | none | Yes | unknown | alive |
| CollegeScoreCard.ed.gov | Data on higher education institutions in the United States | none | Yes | unknown | alive |
| Enigma Public | Broadest collection of public data | apikey | Yes | yes | alive |
| French Address Search | Address search via the French Government | none | Yes | unknown | alive |
| GENESIS | Federal Statistical Office Germany | oauth | Yes | unknown | alive |
| Joshua Project | People groups of the world with the fewest followers of Christ | apikey | Yes | unknown | alive |
| Kaggle | Create and interact with Datasets, Notebooks, and connect with Kaggle | apikey | Yes | unknown | dead |
| Lowy Asia Power Index | Get measure resources and influence to rank the relative power of states in Asia | none | Yes | unknown | alive |
| Nasdaq Data Link | Stock market data | apikey | Yes | unknown | alive |
| Nobel Prize | Open data about nobel prizes and events | none | Yes | yes | alive |
| OpenCorporates | Data on corporate entities and directors in many countries | apikey | Yes | unknown | alive |
| OpenSanctions | Data on international sanctions, crime and politically exposed persons | none | Yes | yes | alive |
| PeakMetrics | News articles and public datasets | apikey | Yes | unknown | alive |
| Scoop.it | Content Curation Service | apikey | No | unknown | alive |
| Teleport | Quality of Life Data | none | Yes | unknown | dead |
| Umeå Open Data | Open data of the city Umeå in northen Sweden | none | Yes | yes | alive |
| Universities List | University names, countries and domains | none | Yes | unknown | alive |
| UPC database | More than 1.5 million barcode numbers from all around the world | apikey | Yes | unknown | alive |
| Wikidata | Collaboratively edited knowledge base operated by the Wikimedia Foundation | oauth | Yes | unknown | alive |
| Wikipedia | Mediawiki Encyclopedia | none | Yes | unknown | alive |
| Yelp | Find Local Business | oauth | Yes | unknown | dead |
13 of these APIs require no authentication — you can start making requests immediately without signing up for an account. Just pick one from the table above, check its documentation, and send your first request.
9 APIs in this category require a free API key. This usually means creating a free account on the provider's website and copying your key from the dashboard. The process typically takes less than a minute.
Not sure where to start? Look for APIs marked as "alive" in the status column — these were recently verified as working. For browser-based projects, check that the API supports CORS.
Yes, all APIs listed on API Bouncer have a free tier. Some are completely open (no sign-up needed), while others require a free account to get an API key. Free tiers typically have rate limits — check each API's documentation for specifics.
It depends on your needs. Consider: Do you need authentication or prefer no-auth? Does your project need CORS support for browser access? How many requests will you make? Start with a no-auth API to prototype quickly, then switch to a more feature-rich option if needed.
We run periodic health checks on all listed APIs. The "Status" column shows whether each API was responding at our last check. APIs marked as "alive" were recently verified. You can also test any API yourself using curl or our guides on testing APIs.
Most free APIs allow commercial use, but terms vary by provider. Always check the specific API's terms of service. Some APIs have separate free and commercial tiers with different rate limits.
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