Apple’s macOS operating system has changed a lot over the last 25 years, with new features and designs coming and going as the decades have passed. Even the name has been adjusted, starting out as Mac ...

The first Mac software was called System 1 and it was released on January 24, 1984, and there have been 30 major updates since. Apple rebranded to Mac OS with the release of mac OS 8 on July 26, 1997.

Mac OS X is the future of the Mac, and we hope it will delight our customers with its unrivaled power and ease of use,” said ...

It replaced the polished but limited Mac OS9 with a UNIX-underpinned reimagining of computer operating systems.