RetroArch is a frontend for emulators, game engines and media players.
RenderDoc is a stand-alone graphics debugging tool
A dead simple 2D game library for Go
Free 32/64/16-bit multi-platform Pascal and Object Pascal compiler
Cerberus Content Management System
Game engine supporting many 3D/2D formats and graphic effects
Web IDE in single HTML file
A promising chess program
3rd Party Video Games Developer: MetalManGames, titles of games
2D Game Engine
A cross-platform interpreter for many point-and-click adventure games
Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
Paintown is a 2d fighting game engine.
Cross platform Game Creation Software
The solution to all your problems
Pye - Javascript Engine For Drawing Fast, Fluid and Dynamic Pie Charts
This is my first fps Game. And I'm only 14 years old. Its big for me.
Very Powerfull Crossplatform Qt Based Music Note Editor[Still Planing]
DRINKS is a set of smart web-based widgets.