Map editor and tutorial.

Standard and custom textures for Quake and Quake2, along with texture creation and manipulation tools.

Various downloadable Quake utilities.

Quake editor for Quake1, Quake2 and Hexen2: levels, QuakeC, maps, models, sounds.

A 3d map editor for the series.

Tutorial, tips, tricks, and general information on creating maps using Worldcraft level editor.