Dedicated Game Server Hosting and Scaling for Multiplayer Games
Distributed server for social and realtime games and apps
Arianne is an engine to develop multiplayer online games like Stendhal
LGSL (Live Game for PHP 5.4-8+: online status for various gameservers
A fast, scalable, distributed game server engine/framework for C++
Free MMORPG
Proxy for games that emulates network conditions like ping and lag.