is a platform-independent software rendering library, which implements features of current-generation graphics cards. Clean code and functionality, which exceeds features of current hardware in specific areas, make Muli3D well suited for prototyping and...
LuxRender is a new open-source free software rendering system for physically correct unbiased image synthesis Rendering with LuxRender means simulating the flow of light according to physical equations. This produces realistic, photographic-quality images
Kerkythea is a standalone renderer, using physically accurate materials and lights, aiming for the best quality rendering in the most efficient timeframe.
OGRE (Object-Oriented Graphics Rendering Engine) is a scene-oriented, flexible 3D engine written in C++ designed to make it easier and more intuitive for developers to produce applications utilising hardware-accelerated 3D graphics.