SGX Engine Core contains the basic functionality which underpins SGX, a 3D graphics engine from Steven Goodwin. It is based around a series of null drivers and loosely-coupled modules to facilitate an infinitely upgradable engine. It is primarily suited to games and digital TV backdrops.
YafaRay is a raytracing engine. Raytracing is an image rendering technique for generating realistic images by tracing the path of light through a 3D scene. A render engine consists of a "faceless" computer program that interacts with a host 3D application to provide specific raytracing capabilities "on demand". Blender 3D is the host application of YafaRay.
The Cafu Engine is an all-purpose, modern 3D graphics engine and game development kit. It is feature complete to get you started quickly. It can be used to create a variety of 3D applications, including games, simulations, and training and architectural software. Written in C++, the tools, libraries, and framework have been designed to make the development of new games and other 3D applications easy. They are actively and continuously developed in order to provide the latest technology.