In my quest to free my collegues from unnecessary passwords, I created a simple web application for integrating Zendesk to Atlassian Crowd.
The webapp (well, it is just one JSP page actually) takes care of authenticating the users with Crowd and then passes this information to Zendesk. It also supports Crowd SSO.
See Zendesk-Crowd integration for more details.
Thanks for Zendesk for making this possible. When evaluating “Software as a Service” packages one aspect I nowadays look is the possibility of integrating the application to our existing authentication infrastructure. When employees come and go, it should be possible to at least disable their access to all systems from a single place.