I've had a look at Maratis, and though it looks very promising, it seems to be missing some features, which I might miss.
I've had a look at JME, and it looks extremely good, with a nice editor as well, which I like. I'm seriously considering this one, although I would have to try out a few games, to check for perfomance.
UDK looks really nice, but according to somewhat reliable annecdote, it seems to be a little more complicated for games that aren't FPS. Someone might have to argue for or against that though.
I've barely had a look at Crafty, but I'm interested.
I've had a look at that tab, loads of time too. However, I seem to have trouble finding exactly what I need.
At the moment, I might have a good look at OgreKit. Though it has been dormant for a bit, it'd be nice if it was really good.