Submitted Nov 15, 2007 by Mikkel A Svane
Please refer to this article from the official Zendesk blog on SSO paths for your help desk.
http://blog.zendesk.com/blog/2007/11/sso-and-ze...

Just posted in blog, but seems like a thread for here: Any updates on this front? We are approaching the holy grail of sso by supporting yahoo bbauth, openid, and google auth in our project management app. By offering openid support to zendesk, we could easily fold it in.

OpenID has been put on the road map and we expect to be able to announce something within 4-6 weeks.