With ArtMatic you can create surreal Electric Sheep-like renders of high quality videos and posters.
This application creates mathematical art based on a small programming language for design grammars.
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A fun cartoon-like phsyics simulator now called Algodoo. Create objects and environments to test the laws of science.
A fractal viewing program. Allows you to infinitely zoom in and out of fractals, and change shading options.