dirpack: This collapses a directory hierarchy into a pak file. We don't really use this anymore after the functionality was built into qcc.
unpack: Unpacks a pak file into a directory tree. I don't think I ever used this, so I'm not even sure it works. Trivial code, in any case.
qlumpy: Grabs graphics off of lbm screens. Has the colormap calculation code and the error-diffused mip map generation code. It generates either individual files, or a combined wad file (barely used at all in Quake now).
texmake: Takes an alias/wavefront .tri file and generates a wireframe outline on an lbm page for artists to draw in.
modelgen: Takes a directory of alias/wavefront .tri files for all of the animations of a character, combines with one or more skins colored over texmake frames, and outputs a .mdl file. Modelgen parses the same source as qcc, so frame indexes keep their symbolic names when compiled into prog code.
sprgen: Grabs sprite data. We coded lots of ways for sprites to behave (allways perpendicular, pivot along Z to face origin, pivot on Z to be parallel to view plane, fixed orientation), but we wound up only having three sprites in the entire game: explosions, drowning bubble, and a gold ball light in the registered version....
