Choosing a WAD editor

A WAD editor allows you to edit WAD files to add and modify sprites, music, DeHackEd patches and other things. Some level editors have a WAD editor built in, like DeePsea.

Mac

 * Deimos
 * WWKSuite
 * Hellmaker
 * Wad Builder

Windows

 * WinTex
 * NWT and NWT Pro
 * XWE, http://www.doomworld.com/xwe/
 * WadAuthor
 * Doom Builder
 * Doom Engine WAD Reader and Extractor, http://www.terrybutler.co.uk/tools/doom-engine-wad-reader-and-extractor/

Linux/Unix

 * DeuTex/DeuSF
 * Yadex