IndieID

 IndieID  is an open source IndieAuth service and an alternative to indieauth.com found at indieid.com

Motivation
Many people rely solely on indieauth.com as their auth endpoint, and while it is open source, it is ruby on rails and a little more difficult to run your own instance. IndieID is written in PHP, uses no database, and tries to keep required libraries to a minimum in hopes that anyone can run their own IndieAuth server. ~

Suported Providers

 * Github
 * Google+
 * Instagram (unstable)

Desired Support

 * Twitter Uses OAuth1 instead of OAuth2 so I have not gotten to it.

Specifically Not Supported

 * Facebook why?