The GNOME project provides two things: The GNOME desktop environment, an intuitive and attractive desktop for users, and the GNOME development platform, an extensive framework for building applications that integrate into the rest of the desktop.
Jam is a MacOS application for building smooth three-dimensional structures called "metaballs" or (more informally) "blobs" for use with the POV-Ray ray-tracing application. Last updated 1999
KDE-based POV-Ray modeler for Unix. 'Under development' for some time (V 0.4.7b)
Particle-System for Pov-Ray
Must be compiled before it will run. A program to generate POV-Ray particles by: Andreas Hirczy (Warning. May be quite old)