Documentation
- OAuth 2.0 Specification - RFC 6749.
- RFC 5849: The OAuth 1.0 Protocol - the final version of the OAuth 1.0 specification.
- OAuth Resource Center from Eran Hammer-Lahav the specifications editor, including a beginner's guide and tutorials.
- Community-driven support FAQ.
- Obsoleted editions of the OAuth 1.0 community specification.