Classic America's Army
Odamex is a free, cross-platform, modern client-server Doom engine
TKD Scoring Wi-Fi Server supporting Android and IPhone clients
Source of Mana is a unique 2D MMORPG
Stream low latency video from your desktop or webcam over TCP/IP
Visual Basic 6 2D online adventure game engine
An unmodified version of the MMORPG Impressive Title by KovuLKD
Free MMORPG
starrydb is game server engine
Java decentralized cross-platform network multiplayer game engine
The original Xivio.com World Server Core
Open Source Virtual World and MMOG Development Platform
Proxy for games that emulates network conditions like ping and lag.
A multiplayer First-Person-Shooter game built in Java 3D
A program to play games through a server with other users.
SSC speichert eure CS:S Server und verbindet euch mit ihnen.
Multi-user whiteboard emphasizing simplicity.