Crystal Space is an Open Source 3D SDK for Unix, Windows, and MacOS/X. It renders with OpenGL and features GLSL shaders, CG shaders, deferred rendering, dynamic shadows, bullet based physics library, terrain engine, skeleton based animation meshes, exporter for Blender, portals, etc...
Perl bindings to the Modern OpenGL API
The Perl OpenGL 2 module provides bindings to the modern OpenGL APIs for use from the perl language.
A Perl script which accepts a chess position (in the FEN format) as input and outputs POV-Ray source, which, when rendered by POV-Ray, produces a 3-D view of the chess position.
The Open Descent Foundation (ODF) is a community for developers, who want to help to create open source programs, tools, etc. for the famous games Descent1, -2 or -3. Everyone can join the ODF if he accepts the idea of writing open source programs.