Open source HTML5 game framework that offers WebGL and Canvas
All Google Snake mods combined into one
Self-hosted CMS platform based on the Laravel PHP Framework
3D game engine/framework in C, with Luajit and Python bindings now
Programming eXperience Toolkit
CTFs as you need them
Open source library for creative expression on the web, desktop, etc.
A completely free, open-source, 2D game engine
JavaScript-based game engine designed to empower developers
Framework for producing web-based database applications
JavaScript framework to build game engines, games, emulators and apps
Javascript library for making tile based games
XML-based framework for developing games
The imaginary eight-bit machine
A complete web framework to create online Fighting Fantasy adventures
Massively multiplayer online game server and client framework
Bring web-cam to life on your monitor.
3D .NET engine for Windows, Linux, Mac
Turbulenz is a modular 3D and 2D game framework
Mud Server in Python Language playable via web browser
Educational framework for OpenGLES, OpenCL and OpenAL
Android:Netrunner Tournament Manager