Open Source MMORPG Framework
Arianne is an engine to develop multiplayer online games like Stendhal
Source of Mana is a unique 2D MMORPG
GameWhizzards is a user created, Open Source 3D MMORPG
Immersive and expansive hardcore old-school 2D ORPG (MMORPG)
Game engine allows you to create own MMORPG
MMOG Framework. Starting place to build a game.
Modular Gaming Open Source Persistent Browser Based Game Framework
Develop an emulated Darkfall Online Server.
Recruit-A-Friend Support for HonorBuddy
Yet Another PHP EVE API Library.
Mu Online Launcher
To create an open source and openly developed mmorpg
.NET World of Warcraft Server
Open Source Virtual World and MMOG Development Platform
Game Communications Engine
Manage your WOW P-Server from everywhere