The friendly Python Imaging Library fork
FlightGear Flight Simulator: free open-source multiplatform flight sim
An interactive viewer for three-dimensional chemical structures.
Xj3D is an open-source Java codebase for the X3D Graphics standard.
BRIC is a powerful tool for batch image processing.
Actionscript 3 Particle Engine for Flash and Flex
swing animation project
This project is no longer active. See vpython.org.
3D model viewer and world navigator.