The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
Cocos2d is an open source framework. It can be used to build games, apps and other graphic interface interactive apps on cross platforms. Cocos2d contains many branches, the famous ones are Cocos2d-iPhone, Cocos2d-x, Cocos2d-html5 and Cocos2d-XNA. Therere some independent editors in cocos2d community, such as SpriteSheet Editors, Particle Editors, Font Editors and Tilemap Editors, also some world editors like CocosBuilder and CocosStudio.