StarfishX is a Mac OS X-native application which generates cool desktop patterns. It is based on Mars Saxman's Starfish pattern generation engine. The following are a few of the highlights of StarfishX:
Mac OS X native cocoa application. Altivec-enabled and multi-threaded to take full advantage of today's dual (and single) processor G4 PowerMacs. (There is also a version of Starfish X which will run on a G3 Macintosh, although it's much slower). Support for multiple monitors (you can generate a different pattern for each monitor connected to your computer). Support for both TIFF and JPEG image files. Option to quit StarfishX when all patterns have been generated. (Perfect for use as a startup item!) Keeps track of recently-created patterns so you can go back to that really cool pattern StarfishX created yesterday.