Solar2D Game Engine main repository (ex Corona SDK)
Desktop/Android/HTML5/iOS Java game development framework
websocket and http client and server library, with TLS support
Memory Efficient Serialization Library
An open source C++ game engine
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Urho3D Game engine
Open source Cardboard SDK and samples
0 A.D. is a free, open-source, cross-platform real-time strategy game.
Orx: Portable Game Engine
3D modeler, 3D game maker, 3D demo maker
Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)
A promising chess program
A cross-platform 2D game engine
MAME Android Emulator.
Easy fine console input/output for java
Build Cross-platform Applications
Highly customizable library for procedural world generation
Realtime 3D engine for game development
Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
plugin-based RPG manager in C++ and Qt5
Open Game Bootstrap
This is a hacking style game set in the early '80s
2D physics engine for games
Source code of the game "Color Flood Filler" for Android OS