This was a Python-based procedural modelling and animation tool for building 3D scenes and teaching 3D geometry and transformations. It ran on IRIX and Linux using the now unavailable closed source OpenGL Performer scene graph.
The software still compiles and runs, but only on ancient versions of Linux such as Fedora Core 7. (And you need to turn off Intel hyperthreading too.)
I am sloowwwly developing a new version, which will be open source all the way down. Don't hold your breath.