A high-quality, totally free tool for creating stunning 3D graphics.
EditByBSEditor: The Persistence of Vision Ray-Tracer creates three-dimensional, photo-realistic images using a rendering technique called ray-tracing. It reads in a text file containing information describing the objects and lighting in a scene and generates an image of that scene from the view point of a camera also described in the text file. Ray-tracing is not a fast process by any means, but it produces very high quality images with realistic reflections, shading, perspective and other effects. you can free download POV-Ray for Linux 3.7 Beta 27 now.