QTI Works now has a presence on SourceForge:
It's fairly vestigial at the moment, so don't get too excited! If you're a geek, you'll quickly notice that there is no source code there at the moment. I'm presently developing QTI Works within my own github area, and plan to push things over to SourceForge once we get past a few more milestones. Until then, you can get the source code at:
Please don't expect any API stability this point. There's also no build documentation yet, which probably doesn't help...!