I've just uploaded a Linux executable sample created using the current pre-release version of PUK (physics utility kit):
http://www.continuousphysics.com/ftp/pu ... puk.tar.gz
PUK is intended for novice coders using windows or linux (I see no reason why it shouldnt work on MacOS too...)
When its released it will be open source, in the mean time if you are interested helping out with the coding please contact chris_camacho via yahoo mail