CsDoom
From OdaWiki
csDoom was one of the first widely-played Client/Server Doom ports. Over time, it fell out of widespread use. After csDoom .7 was released, csDoom's leader programmer ""Fly"" had lost interest in the project. The current maintainer of csDoom is Odamex's lead programmer, denis.
Odamex was initially based on csDoom .62