A lightweight game server framework implemented with Actor Model
A lightweight online game framework
A Rust framework for building Minecraft servers
Odamex is a free, cross-platform, modern client-server Doom engine
Arianne is an engine to develop multiplayer online games like Stendhal
Full featured MUD server with all the trimmings.
LGSL (Live Game for PHP 5.4-8+: online status for various gameservers
Console based rcon client for minecraft servers.
Free MMORPG
Game server browser
Provides a full suite of clients and servers for virtual worlds.
starrydb is game server engine
Web based Game server control panel
Simple meta-server for locating other multiplayer servers
Simple, easy to use, SRCDS RCON tool.
Webinterface
A turn-based multiplayer shooting game in the style of Worms
Multiplayer mod for the Jedi Knight game series.
The IRC's Talking Robot