Simulation of ellastic collisions of spheres in a three dimensional space (Bumping Balls)
I wrote this simulation as a research paper for school in 2008/09. It is published using the GPL V.3 License, so you can download it (as you can do with the paper) an use it as you like. It is written in Python so it should work (if you have the python interpreter and the used libraries installed) on every operating system. In addition there is a compiled version for windows.