The Xcode toolset includes the amazing Xcode IDE, with the Interface Builder design tool and Apple LLVM compiler fully integrated.
Xcode IDE:
Designed from the ground up to take advantage of the newest Apple technologies, Xcode integrates all the tools you need. The unified interface smoothly transitions from composing source code, to debugging, and even to designing your next stunning user interface, all within the same window.
The Xcode workspace is all about keeping you focused. As you type, Live Issues will immediately alert you to coding mistakes, displaying a message bubble beside your code for more detail. Hit the Run button to launch your Mac app, or upload the app to your test device, and immediately start debugging. Hover the mouse pointer above a variable to inspect its value at runtime, never having lost your place in the editor.
Apple LLVM Compiler
Apple’s next generation compiler technology, the Apple LLVM compiler, does more than build your app. Apple LLVM technology is integrated into the entire development experience. The same parser used to build C/C++ and Objective-C powers Xcode’s indexing engine, providing incredibly accurate code completions. As you work, Apple LLVM is constantly evaluating what you type, identifying coding mistakes that Xcode shows as Live Issues, and thinking ahead for ways to Fix-it for you. Other compilers can tell you what is wrong — Apple LLVM can make it right.
That s all....
-> it' s user friendly for mac OS.
-> Easy to development and so on.....
