CrystalSpace

From ArtSoftware

CrystalSpace is a free, open source 3D graphics engine written in and for C++. It is cross-platform, supports and range of rendering features and often has a large number of developers (over 100 at times). CrystalSpace, like OGRE, is meant to be a general real-time graphics solution and not a gaming engine as it does not provide physics, collision detection, etc. However, it is frequently used in conjunction with other libraries to develop games.