I second FogBugz. I especially like the one-click time tracking for working on cases, and how it integrates with evidence-based scheduling: http://www.fogcreek

I second FogBugz. I especially like the one-click time tracking for working on cases, and how it integrates with evidence-based scheduling: http://www.fogcreek.com/FogBugz/LearnMore.html?section=PredictShipDates http://www.fogcreek.com/FogBugz/LearnMore.html?section=Predi... I've no experience with RT, but a quick look seems to indicate it's more ticket-based, whereas FogBugz covers more areas (wiki, integration with version control s/w, etc.). (And no, I don't work for Fog Creek.)