Xcode is Apple's IDE for developing Mac and iOS applications.
Xcode is Apple's IDE for developing Mac and iOS applications. It's found on the Mac App Store and at http://developer.apple.com/. The most recent version, released in 2011 is Xcode 4. In addition to Objective-C (and some other languages) code editing and project/build management, it can edit XIBs (XML Interface Builder files, somewhat akin to XAML files in Silverlight) and Core Data managed object models.