BusySpheres is a beautiful screensaver by Terry Welsh. It was originally written for Windows, and then ported to Linux by Tugrul Galati. I could not find a Mac OS X version, so I wrote one based upon screensaver ports by Stéphane Sudre.
What's new in BusySpheres
Quick fix for a complier problem that prevented randomized patterns from reliably working.
1.0 (7/30/2005) - Initial port based upon Sudre's "Plasma" 10.0.4 and the busyspheres source code from Galati's 0.80 release of rss-glx.