A C# implementation of the OpenID, OAuth and InfoCard protocols
A 100% spec compliant, secure by default PHP OAuth 2.0 Server
Making it simple to integrate your application with OAuth 2.0 identity providers.
OAuth 2.0 server-side implementation written in Scala
The most popular PHP library for use with the Twitter OAuth REST API.
OAuth client integration for Symfony. Supports both OAuth1.0a and OAuth2.
oauthd - The OAuth Daemon is the open source version of the OAuth.io core
OmniAuth strategy for Cortex's OAuth 2.0 implementation
Node OAuth Shim is a RESTful way to authenticate and sign request with OAuth1/1a endpoints
Fixes how Meteor handles OAuth popups on PhoneGap/fullscreen
Combining OpenID, OAuth and FacebookConnect signup in one application
foauth.org makes OAuth optional. A Runscope Community Project.
An OAuth 2 client for PHP with multiple authorization flows support