CinePaint (a.k.a. Film Gimp) for Windows

A beta version of cinepaint (film gimp) for windows has been released. It can be used to postprocess pov 16 bits png (created with +FN16).

CinePaint is a free open source painting and image retouching program designed to work best with 35mm film and other high resolution high dynamic range images. It is the most popular open source tool in the motion picture industry -- used in Scooby-Doo, Harry Potter, Stuart Little and other feature films. CinePaint is used for painting of background mattes and for frame-by-frame retouching of movies. CinePaint is available for Linux, Macintosh OS X, Windows, and other popular operating systems.
[from the POVRay site at http://www.povray.org/ ]

Gilles Tran

Uses POV-Ray to render stunning images from from mind-boggling 3d POV-Ray scenes.
http://www.oyonale.com/histoire/english/index.htm

One of my favorite pictures is
http://www.oyonale.com/ldc/english/family_day.htm

Another brilliant piece is The Thin Wall
http://www.oyonale.com/ldc/english/thinwall.htm
Do look at the detail images -- you'll find there is a lot more to it than first seems.

Wet Bird http://www.oyonale.com/ldc/english/wetbird.htm won the International Raytracing Competition in April 2000

For those that don't know, POV-Ray is a completely free ray tracing program which is in some ways superior to products that you might pay thousands of dollars for. It is a bit harder to master than such expensive products but is infinitely more flexible. You can download it from http://www.povray.org along with its source code if you wish. It has always been free and has been under continuous development since it was produced by David K. Buck as DKBTrace back in the mid-80s.