PvPGN
PvPGN is a bnetd based gaming network server emulation project.
It currently supports all Battle.net games (such as StarCraft, Diablo II, and Warcraft III), and most Westwood Online clients (Tiberian Sun, Red Alert 2, Yuri's Revenge).
It gives you the power to run your own server, manage your own users, run your own tournaments, etc.
D2GS
Diablo II Game Server for 1.13c, 1.13a, 1.12a, 1.11b, 1.10, 1.09d, 1.09c game versions.
Version for patch 1.11b+ being developed by marsgod.