Pomelo is a fast, scalable game server framework for node.js. It provides the basic development framework and a lot of related components, including libraries and tools. Pomelo is also suitable for realtime web application, its distributed architecture makes pomelo scales better than other realtime web framework.

It’s easy to use, the development model is quite similiar to web, using convention over configuration, almost zero config. The api is also easy to use. The framework is extensible. All the components, libraries and tools are individual npm modules, anyone can create their own module to extend the framework. The reference is quite complete, they have complete documents. They also provide a full open source MMO demo (html5 client), which is a far more better reference than any books.

Requirements: Node.js Framework
Demo: http://pomelo.netease.com/
License: MIT License