Current offerings:

     
 

Edo

A powerful realtime compositing program.

 
 

Turtledove Kingdom

A generative art program, available as screensaver and standalone image generator.

 
 

Light Remainders

A screensaver that imitates the style of 60's "scratched-on-film" experimental movies.
Free download: Mac OS X disk image, 580 kB (sorry, this is old software, Intel Macs are not supported!)