Public API Directories
Where to find free and public APIs for your next project — curated directories and machine-readable catalogs.
alternatives (4)
★ publicapis.dev
Best for: Browsing by category
Searchable, categorized directory of public APIs with a clean modern UI.
- +Fast search
- +Categorized
- −Community-curated
public-apis (GitHub)
Best for: One giant list
The massive community-maintained list of free APIs across hundreds of categories.
- +Huge
- +Open source
- −Plain list
APIs.guru
Best for: OpenAPI specs
A "Wikipedia for APIs" — a directory of OpenAPI specs you can consume programmatically.
- +Machine-readable
- +OpenAPI
- −Spec-focused
RapidAPI Hub
Best for: Try & subscribe in one place
Marketplace to discover, test, and subscribe to thousands of APIs through one gateway.
- +Test in-browser
- +Unified billing
- −Many APIs are paid
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Tick the ones you want to compare
| Alternative | Type | Coverage | Free tier |
|---|---|---|---|
| ★publicapis.dev | Directory | Broad | Yes |
| public-apis (GitHub) | List (repo) | Very broad | Yes |
| APIs.guru | OpenAPI catalog | Broad | Yes |
| RapidAPI Hub | Marketplace | Very broad | Limited |
Start at publicapis.dev or the public-apis GitHub list to browse free APIs by category; use APIs.guru when you want machine-readable OpenAPI specs; and RapidAPI Hub to test and subscribe to many APIs through a single gateway.