3D modeller that uses OpenGL on many platforms. Usability is a key design goal of this project, as is platform portability. The UI will be done with Qt.
Exipnos is an Open Source, network based 3D virtual reality platform. The platform is intended mainly (but not exclusively) for eLearning applications. Role Player or Adventure Games might as well be developed and hosted on Exipnos.
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.
A freely available clone of the excellent molecular modelling program "O" from Alwyn Jones.