Minecraft server optimization guide
A lightweight game server framework implemented with Actor Model
Fully async, multithreaded, predictive, open source, 3.01 reach
A lightweight online game framework
Arianne is an engine to develop multiplayer online games like Stendhal
The ultimate cataloguer
JavaScript framework to build game engines, games, emulators and apps
Full featured MUD server with all the trimmings.
A Rust framework for building Minecraft servers
Low-latency, high quality voice chat for gamers
A cross-platform interpreter for many point-and-click adventure games
Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
Simple, easy to use, SRCDS RCON tool.
A turn-based multiplayer shooting game in the style of Worms
A simple telnet (and possibly SSH) server
Mission Impossible C64 game remake in HTML5