VPython (formerly known as Visual Python) is an interactive 3D package for Python that offers real-time 3D output, and is easily usable by novice programmers. VPython is free and open-source. Platforms Supported At the moment VPython works on Windows and Linux. There is also an alpha Macintosh version. Project Homepage http://virtualphoton.pc.cc.cmu.edu/projects/visual/ Sent via Deja.com http://www.deja.com/ Before you buy.