OpenID

OpenID is an open standard that describes how users can be authenticated in a decentralized manner, eliminating the need for services to provide their own ad hoc systems and allowing users to consolidate their digital identities.

Free Open Source Web

Janrain

Janrain provides hosted user management solutions for social login and sharing, single sign-on and social profile storage.

Commercial Web

Profilactic

Profilactic.com is an online identity aggregator that pulls together all of the profiles and content that you create at sites like Flickr, twitter, MySpace, Digg...

Free Web

yiid

yiid - Your Internet Identity - Simplify your community life

Free Web

Proofile

Proofile is a simple and easy way to connect your online identities with each other making it possible to link and manage your web accounts. All the data may be made...

Free Web