zstar (z*) Networked 3D project is an extensible, distributed system for 3D application and game development, consisting of an abstract game client (similar in concept to the one that xpilot uses) and a game server to which players connect to play games against other players or alone. This framework should be suitable for FPS, VR, MUDs, or any application that requires 3D and networking. The Win32 version currently only runs under Cygwin.
The PVM patch for POV-Ray gives POV the ability to distribute a rendering across multiple heterogeneous systems. Using the PVM code, there is one master and many slave tasks. The master has the responsibility of dividing the image up into small blocks, which are assigned to the slaves. When the slaves have finished rendering the blocks, they are sent back to the master, which combines them to form the final image.
Grlib is an implementation of generative grammars and turtle graphics. The grammars (Lindenmayer systems) are used to produce descriptions of three dimensional objects, and the turtle is used to display them (i.e., generate images in several forms, such as bitmap, PostScript, or OpenGL).
Peflp (Povray front-End For Lazy People) is yet another povray front-end that is designed to be easy-to-use while staying useful. It is written in Tcl and features persistent settings so that initiating a pov render on the last project does not take too many clicks, and a reduced ('stamp') image of the project to mouse-select 'partial' rendering zones. The stamp image is rendered directly in small format or extracted from last full render (using ImageMagick).