gbAnimator - Related Sites
Here are two other sites you may want to visit. Both offer online (Java) applets - whereas gbAnimator can be downloaded for offline use on your PC.

• SodaPlay
  gbAnimator is loosely based on the type of animation available at Sodaplay (http://www.sodaplay.com). Their site has been up a few years and has a strong following.

• Spring World 3D
  I've only recently located this site, so I can't tell you much about it - but its basically a 3D version of gbAnimator/Sodaplay.