Apple’s Mac operating system has undergone many sizeable changes over the years. Here’s every version in order, from the ...

For Apple fans who rushed to the operating system last year, moving to version 10.2 means having to buy a new Mac or pay full retail for the software.

The standard update only updated the previous version of the OS to the current version; for example, the standard updater for Mac OS X 10.3.4 could only be used to update Mac OS X 10.3.3.

Apple's latest operating system, Mac OS X Mavericks, is here (and won't cost you a dime). Check out our quick guide on how to upgrade to Mavericks for free.

Mac OS X 10.11 El Capitan is the next version of OS X, succeeding Yosemite. Apple previewed the new version of the Mac operating system alongside iOS 9 at the Worldwide Developers Conference on ...