DoomEd 4.2

Doomed is a shareware sector based easy access level editor for Windows 3.1, supporting Doom, Ultimate Doom, Doom II and to a degree Heretic, by Geoff Allan. Also got a basic WAD editor as well as node-builder built in. Doomed was one of the first Windows editors released and also had one of the most automated UIs, making it the ideal choice for people new to Doom mapping. The last version was released in January of 1995 and the source was later released in mid 1997.