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Public APIs
APIsA community-curated GitHub repository listing thousands of free public APIs, organized by category.
open-sourceweb
APIOpen SourceFree
The open-source tool that turns OpenAPI specs into interactive, self-documenting API pages.
Swagger UI is how you document an API without writing docs by hand. Point it at an OpenAPI specification and it generates an interactive page where anyone can read endpoints, see schemas, and execute requests directly. It's the standard look behind thousands of developer portals. Because the docs come from the spec, they stay in sync with the code that generates them. The open-source project is easy to host, and the same spec powers client SDK generators and mock servers. If you build an API, Swagger UI is the fastest way to make it approachable.
A community-curated GitHub repository listing thousands of free public APIs, organized by category.
Custom mapping and location APIs with beautiful vector tiles, geocoding, routing, and navigation.
An API marketplace where you discover, connect to, and manage thousands of third-party APIs in one place.
The open-source foundation's guides and checklists for building and securing software against common attacks.
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