This is a superb texture generator, similar in format to Kai Power Tools 3 texture generator, but much more versatile. It has built-in facilities to produce 3D textures. Textures can be tiled, where each section is identical to its neighbour, or generated inside a larger format where each section is slightly different to the next (see most of those below e.g. non-repeating wallpaper). I can play with this for hours! Have a look at the bigger pics - the thumbnails are too tiny to see detail.