The document discusses Cocos2d, an open source framework for building 2D games, animations and other graphical/interactive applications. It supports 10 platforms including iOS, Android, HTML5 and others. There are over 340 games built on Cocos2d-x with 147 million downloads. The framework allows developers to write code once and deploy to both mobile and web platforms using the same Javascript API and codebase. The goal of Cocos2d is to create a world-class open source project.