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.
dunan is a little program that shows animated Miku Miku Dance 3D models on the desktop. It also supports Miku Miku Dance motion files and has a built-in settings menu and mouse and keyboard control functions. It can optionally play MP3 or Ogg files. It uses real transparency, and can be used with any window manager. It has very few dependencies, and works fine with compiz.