GMUVE (Graphical Multiuser Virtual Environment) is an engine/framework that lets large numbers of users interact in a 3D world. GMUVE is a peer to peer networked OpenGL application that can be used for MMPOG or 3D chat. It is available in Python and JAVA
Slut is a programming framework for generative, synthetic, interactive, network-enabled graphics. THIS IS AN OLD PROJECT. But since you are interested in it you should check out the SceneExpression project: http://labs.nortd.com/sx/
A Graphical Editing Framework(GEF), for Python. It provides a canvas similar to wxArt2D and a editing framework based on MVC. The framework can be used to develop scientific and engineering tools that require graphical editing.
A project to provide a simple platform-independent framework for rendering with hardware-accelerated OpenGL in an offscreen buffer. Results are captured for print, broadcast over video, web, etc.