A fun realistic multiplayer free-and-open-source first-person-shooter!
oGame-like browser space realtime strategy game based on xNova
MOVED OUT OF SOURCEFORGE - Server software for Minecraft PE
web cms for clans and esport related pages
The original Xivio.com World Server Core
Multiplayer geography game.
Modular Minecraft server plugin - commands, events, ...
A open-source online football manager like hattrick
EPIC is an indepth Multiplayer Strategy RPG Web Game
An HTML web game platform
LetsPlay is a bukkit plugin.
Battlefield 3 Remote Administration and Information PHP Class