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

T he tenth version of Apple’s tenth operating system, OS X Mavericks, will be totally free and it’s available today, Apple software engineering honcho Craig Federighi revealed after ...

The update first started rolling out on Monday. It fixes a component of the OS which relates to network time protocol (NTP), which is used for synchronizing clocks on computer systems.

OS X Mountain Lion, which debuted in July 2012, continued this trend. Mountain Lion was the last macOS version not initially offered for free.