What is XCode?
XCode is a suite of tools that is known as an IDE (integrated development environment) and it is used mainly for app development for Mac OSX and iOS. Although it can be used for other development as well. The latest version is XCode 5 is available as a free download on the App Store. This is the version that is used for this tutorial. This tutorial will show you how to install XCode on OS X Mountain Lion along with the XCode Command Line Tools.