High Quality Content by WIKIPEDIA articles! Xcode is a suite of tools, developed by Apple, for developing software for Mac OS X and iOS. Xcode 4.2, the latest major version, is available on the Mac App Store for free for Mac OS X 10.7 (requires an Apple ID (which as of 6-Oct-2011 requires a credit card to register)), and on the Apple Developer Connection website for free to registered developers (though membership costs $99 per year) for Mac OS X 10.6. As of September 2011, Xcode version 3 is still available for free download from the Apple Developer Connection website. Mac OS X install DVDs typically include a copy of Xcode, as well.