Libraries for implementing user authentication and authorization.
Json Tokens to authenticate and transmit information.
A Twitter OAuth library.
An OAuth 2.0 client library.
Platform-Agnostic Security Tokens.
A multi-provider authentication framework.
Another OAuth library.
An OAuth 1.0 client library.
An open source social sign (OAuth1\OAuth2\OpenID\OpenIDConnect).
Provides authentication functionality and session tracking using various adapters.