Xcode: The centerpiece of developer tools.

The centerpiece of the developer tools included with Mac OS X is the Xcode application. Xcode is a full-featured IDE for developing Mac applications and includes a world-class code editor, a graphical debugger, and integrated Objective-C, C, and C++ compilers. Xcode has intimate knowledge of the Cocoa frameworks that power Mac OS X, and it is even able to identify bugs by analyzing the code you write — without running the application. The intuitive development experience makes it easy to get your first application up and running, yet Xcode is so powerful that Mac OS X itself is built using the exact same toolset.