SDB:Request Tracker
As of February 2013, Request Tracker has been packaged and is available in the devel:languages:perl repository.
A detailed HOWTO/description of how I installed and configured Request Tracker 4.0.10 on openSUSE 12.2 can be found at the Request Tracker wiki. Alternatively, a openSUSE 12.3 install tutorial is available at this Czech blog site.
More information about Request Tracker can be found here.