A bit more than a year ago I was explaining how I managed our test cases for joost. Things did not change much since then, but are on the verge of changing. After my trip to mozilla, I did spend some time investigating Litmus but found that it was really too tied to bugzilla and did not felt like hacking much on it. I did like the fact that Litmus is written in perl. Since then I we got experienced QA people that joined joost and the first thing they did was search for a tool to use for storing and running test plans. The chosen solution is named Aptest. I've had the pleasure of installing aptest, which is also written in perl. For now I can't really say that we are using it, because we need to spend some time figuring the application. I'll keep you posted on our usage and our tools.