New WAD Tool
From DoomWiki.org
New WAD Tool (NWT) is a DOS WAD editor for Doom, Doom II, and Heretic, created by Denis Moeller of The Innocent Crew in 1996. Much like DeuTex, it can be used to add, edit, and replace lumps inside a WAD file. NWT also has the capability to edit TEXTURE1 and TEXTURE2 and PNAMES lumps, view graphics, listen to sound resources and clean WAD files (much like Cleanwad).
NWT pro beta release
A beta version of NWT 1.4 was released that was described as a "pro" version. This fixed some of the limits of version 1.3 and claimed support for Hexen and Strife (which could not be loaded with 1.3).
The most significant change with this release was the addition of a second pane for viewing an IWAD and PWAD side by side, making it reminiscent of an orthodox file manager like Norton Commander.
Screenshots
Texture editor view
Hexdump of a single WAD lump
NWT "pro" v1.4
Initial screen of NWT v1.4.
Parallel IWAD/PWAD views, with DOOM2.WAD on the left and DECA.WAD on the right.
Enhanced texture editor shows patch x/y coordinates.
