LÖVE is an awesome 2D game framework for Lua
MAME is a multi-purpose emulation framework
A lightweight game server framework implemented with Actor Model
Open-source, cross-platform, game-development tools
C++ Framework for slot machine games
Cross platform 2D game creation framework with Python bindings
easy programming language for 2d games
A C++ Implementation of the MIT OpenBlocks Java Code
Hashing and spatial concurrency library.