Moving to Poker Software...
It's been around for years and is a constant work in progress. No, it's not really worthwhile unless you're a software geek who enjoys spending hours tweaking and recompiling code and aren't looking for a lot of cutting-edge features. It has never come close to the level of finished product as PT or HM. But if you're a software geek who like to play around, it's an interesting project. It isn't really cost effective though for a serious player considering how cheap PT and HM are. They will pay for themselves in no time.
FWIW I'm a lifetime software geek, slinging code for going on 3 decades now and a huge proponent of open source software, and I never gave it more than a passing glance.