Cocoa is Apple's native object-oriented application programming interface (API) for the OS X operating system.For iOS, there is a similar API called Cocoa Touch which includes gesture recognition, animation, and a different set of graphical control elements, and is for applications for the iOS operating system, used on Apple devices such as iPhone, iPad, iPod Touch and Apple TV.Cocoa consists of the Foundation Kit, Application Kit, and Core Data frameworks, as included by Cocoa.h header file, as well as the libraries and frameworks included by those, such as the C standard library and the Objective-C runtime.Cocoa applications are typically developed using the development tools provided by Apple, specifically Xcode (formerly Project Builder) and Interface Builder, using the Objective-C or Swift language.