Qoole v2.5 can be used for Quake, Quake2, and Hexen out of the box. There are also additional entity files for such mods as CTF, Action, and Rocket Arena 2. The entity file is an extension of the Qoole configure files that expands or reduces the scope of the entities that can be applied to a brush or entities that can be placed into the map. The entity files have the extension .ent. Custom entity files are simple and easy to create when needed.You can make a complete working Quake-Quake 2 or Hexen Game Level in 15 Minutes! I know this will be my Best Download. Also keep in mind I added SOME of the 18 tutorial videos to the "Level Editor Tutorial" page.
[ Updated December 3rd,2012 ]
Here are some other versions of Qoole etc to look at!