ZDaemon

ZDaemon is a source port specifically tailored for online play, originally based on csDoom, which was in turn based on ZDoom 1.22. It has since gone through several major facelifts. The ZDaemon project was originally started by Nightfang, however he has since given up control of the project to a team of developers that include Raider, Kilgore, and Doom2pro. The most recent version of ZDaemon is 1.06.

At the time of writing, the ZDaemon project consists of the ZDaemon client itself, a fully featured launcher named ZLauncher, and an server launcher named ZSL.