Array is an easy-to-use animation program. If you know the children's toy where you poke transparent colored pegs through a backlit screen (LiteBrite), Array uses the same idea, but with multiple screens, to create animation. You color points on a sequence of frames. There are various functions to manipulate the points. You can play, save, and reload your animation. You can export your animation as a Flash movie.
Mac OS X 10.2 or later