Complete Open Source and Modular solution for MMO
Open Source MMORPG Framework
Experimental PlayStation Vita emulator
GameServer is a sophisticated, game server designed for online games
An OpenGL client-server game
starrydb is game server engine
plugin-based RPG manager in C++ and Qt5
LUR is a Rebuild of Lego Universe created in Uneral 4.
My LEGO Universe Server
A turn-based multiplayer shooting game in the style of Worms
Develop an emulated Darkfall Online Server.
An OpenSource (C# .NET) TeamPlay Environment.
Cross-platform 2D game engine
War of Respect is an online turn-based MMORPG in 2D-anime style.