Doom Builder
 Doom Builder is an advanced Doom, Heretic and Hexen level editor.
With this Doom map editor you can edit your maps in 2D mode and 3D mode! With the real-time editing in the 3D mode you can modify and see exactly how your map will look in the game.
This editor supports popular engines such as ZDoom and Skull Tag and several others. Doom Builder comes with the 3 most popular nodebuilders (BSP, ZDBSP and ZenNode) and you can plug in any other nodebuilder if you like.
Click this picture for full screenshot
"Very nice, the 3d mode is awesome
and the interface is simple and clean"
-- Szymanski
"I just tried out Doom Builder. I cannot map
at all, but DB makes the process easy."
-- BBG
"I've been using Doom Builder for about
a day now and I must say it's kickass."
-- DaniJ
"Nice to see Doom Builder progressing.
I'm really impressed by it!"
-- Zarcyb
"This is amazing. The 3d view really
speeds up editing tremendously."
-- Cornbread
Statistic source: NewDoom.com
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