Xcode is an integrated development environment (IDE)
containing a suite of soft ware development tools developed by
Apple for developing soft ware for OS X and iOS. First
released in 2003, the latest stable release is version 5.0 and is
available via the Mac App Store free of charge for Mac OS X
Lion and OS X Mountain Lion users[2]. Registered developers
can download preview releases and previous versions of the
suite through the Apple Developer website [3].