HybridAuth, Open Source Social-Single-Sign-On Solution for authentication through Facebook, Twitter, Google, Yahoo, MySpace, LinkedIn, AOL, Vimeo, FourSquare, OpenID and other Identity providers
►http://hybridauth.sourceforge.net
HybridAuth is an open source web-based #authentication and authorisation solution that combines the strengths of several major social networks and Identity Providers services into one simple PHP Library.
repéré par @b_b