OpenID

distributed Single Sign-On system

http://openid.net/

Zope/Plone support http://article.gmane.org/gmane.comp.web.zope.plone.devel/10088

http://www.openidenabled.com/ provides some libraries including Python

TracWiki [has](http://trac.sandbox.lt/auth/wiki/Auth Open Id Plugin) a plugin

providers

• http://openid.pbwiki.com/OpenID-Providers

  • Yahoo, AOL, etc.

  • My Open Id

  • LID: My Lid

  • Verisign acting as provider http://blogs.verisign.com/infrablog/2006/05/introducing_the_verisign_perso_1.php

• run your own http://openid.pbwiki.com/Run_your_own_identity_server