RetroArch is a frontend for emulators, game engines and media players.
Simple and Fast Multimedia Library
A dead simple 2D game library for Go
LÖVE is an awesome 2D game framework for Lua
Dynamic Speedometer and Gauge for Android. amazing, powerful
Gideros Release version
An award-winning drawing program for children of all ages
3D Engine c++
Domination is a game that is a bit like the board game Risk
A MUD client for Android, iOS, Linux, Mac OS X and Windows
GemRB is a portable open-source implementation of the Infinity Engine
TKD Scoring Wi-Fi Server supporting Android and IPhone clients
INSTEAD - Simple Text Adventure Interpreter.
Android, UIQ 3.0, Series 60 Edition 5 open-source software
Cerberus Content Management System
the java game and entertainment runtime
Simple and flexible programming language for applications development
Game engine supporting many 3D/2D formats and graphic effects
Computer opponent for the board game Blokus.
A promising chess program
Orx: Portable Game Engine
Old style soccer game with many exciting features
3rd Party Video Games Developer: MetalManGames, titles of games