An open source reimplementation of the Among Us Server
Odamex is a free, cross-platform, modern client-server Doom engine
LGSL (Live Game for PHP 5.4-8+: online status for various gameservers
A multiplatform medieval 3D MMORPG
Source of Mana is a unique 2D MMORPG
An unmodified version of the MMORPG Impressive Title by KovuLKD
Crossfire RPG Game Weather Patch -- Now a branch on the official repo!
An online multiplayer real time strategy game
Private Online Game Launcher for Any kind of Game
Free MMORPG
Cosmos Tycoon is a open source transport simulation browser game.
JAVA websocket implementation for a bomberman-like game
Easily create Unturned servers with little computer knowledge.
MinecraftForge Server Software implementing the Spigot/Bukkit API
Grepolis utility
A Kingpin Mod - Blood Money 616
Simple meta-server for locating other multiplayer servers
A simple 2D-Chess
canarymod plugin to play capture the flag on minecraft
MOVED OUT OF SOURCEFORGE - Server software for Minecraft PE