Crimild Engine is an open source scene graph based engine which purpose is to fulfil the high-performance requirements of typical multi-platform two and tridimensional multimedia projects, like games, simulations and virtual reality.
A collection of projects based on the Virtual Object System (VOS) platform. The goal of Interreality is to develop a free and open platform for multiuser 3D virtual reality and interactive, collaborative 3D virtual spaces, as well as other applications.