OpenID implementation like StackOverFlow

I'm looking t开发者_运维问答o implement OpenID the same way that StackOverFlow uses it. I've looked through a few APIs and I've scouted out JanRain but I'm not sure these do what I'm looking for. Has anyone duplicated the login functionality available here?

Yes, with http://simpleid.sourceforge.net

http://openid.net/add-openid/

Thats the link to adding the OpenID StackOverFlow uses. They have plug ins for:

• Drupal
• Wordpress (OpenID)
• Wordpress (Janrain Engage)
• SPIP
• WebGUI
• MediaWiki
• DokuWiki
• phpBB
• PunBB

Janrain Engage, what you talked about in your question, is a hosted solution that adds OpenID to websites with very light engineering requirements.