You can still buy Mac OS X lion and Mac OS X Mountain Lion from the Apple store for approximately $20 each, but they've also been made available for free through Apple support documents.

Released in 2011 and 2012, OS X Lion and Mountain Lion were the last paid software updates for the Mac. Now you can download them for free.

The current version of Apple’s Mac software is macOS Big Sur, although some people still use older versions of the software like OS X Lion and Mountain Lion. Until recently you had to pay for ...

As was mentioned earlier today during Apple’s special event, Mac OS X 10.10 Yosemite is now available as a free upgrade for users running OS X 10.8 Mountain Lion and 10.9 Mavericks. To get the ...

When asked why Apple decided to make Mac OS updates free, and make its iWork suite complimentary with new Macs, CEO Tim Cook said it was just what Apple wanted to do.