There's also Vortex2 which has more features and shadows, but has a bug with the skeletal animation system so it diverted to vertex morph animation which is not good and practical.
Btw, I assume you already saw this, so you should join the site challenge for the waterfall entry as I think you will already win by default (only entry so far). Mark (markcwm) has now taken over and sponsoring this contest with a bit of reward or prizes will be given.