RetroArch is a frontend for emulators, game engines and media players.
TKD Scoring Wi-Fi Server supporting Android and IPhone clients
A MUD client for Android, iOS, Linux, Mac OS X and Windows
3D Engine c++
Run Windows applications on any computer.
A cross-platform interpreter for many point-and-click adventure games
Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3