MAME is a multi-purpose emulation framework
Phaser CE is a fun, free and fast 2D game framework
The repository for MonoTorrent, a bittorrent library for .NET
An efficient, extensible and easy-to-use RPC framework
Arianne is an engine to develop multiplayer online games like Stendhal
Cerberus Content Management System
Flexible, extensible, and scalable video game matchmaking
A bot and framework for generals.io
MMORPG
Adds input boxes to Phaser like CanvasInput, but also works for WebGL
A Flash Molehill (Stage3D) GPU accelerated 2D game engine
Toolkit for the easy prototyping of hybrid games for Tabletop Devices
C++ Framework for slot machine games
An IRC bot project case study.
Another OpenGL Game Framework for Windows
Powerful html5 & javascript library for creating applications & games.
Create your own online real-time browser-based MMO in your website
c# game server framework