Desktop/Android/HTML5/iOS Java game development framework
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)
A mapping tool for text-based games like text adventures, MUDs, etc.
MAME Android Emulator.
Easy fine console input/output for java
Game engine for playing tomb raider 1 - 5 levels.
Visual C++ Compiler For NetBeans
Open-DIS implements the IEEE DIS protocol in multiple languages.
WYSIWIG conditional compilation preprocessor for Java etc.
Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
2D physics engine for games
Develop an emulated Darkfall Online Server.