1. Roger Allen
  2. QuasiCrystalScreenSaver

Source

QuasiCrystalScreenSaver / README.txt

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QuasiCrystalScreenSaver is a Mac OS X screensaver that displays interesting patterns based on quasicrystals via OpenGL.

See https://bitbucket.org/rallen/quasicrystalscreensaver/wiki for more info.