EXtendable WAD Editor

Homepage:

http://www.doomworld.com/xwe/

many, many features, such as: Lump management Create/Merge/Clean Wad files Import/Export Map Editor Image Editor Texture Editor Palette Editor ColorMap Editor 'Endoom' Editor Script Editor/Compiler Wave editor Music viewer and if that would not be enough, it supports a gamut of other games: Doom, DoomII Adrenix Alien Trilogy Blake Stone Blood, Blood 2 Chasm: The rift Corridor 7 Dark Forces DeathStar Descent 1, 2 Duke Nukem 3D EOB1, 2, 3 Eradicator FAKK2 Foresaken Half-life (partial) Hexen Heretic Lands of Lore MDK NecroDome Op. Body Count Outlaws PowerSlave Quake 1, 2, 3 Realms o. t. Haunting Redneck Rampage Rise of the Triad Scrapland Shadow Warrior Shogo Strife (SW) System Shock Thief Ultima Underworld I Unreal Witchaven Wolfenstein3D