Within the market of desktop, laptop and home computers, and by web usage, it is the second most widely used desktop OS, after Microsoft Windows. macOS is the direct successor to the classic Mac OS, the line of Macintosh operating systems with nine releases from 1984 to 1999.

What type of operating system does Apple use?

iOS is a proprietary mobile operating system owned by Apple and it is only allowed to be installed in Apple equipment. The current version — iOS 7 — uses approximately 770 megabytes of the device’s storage. A general description of iOS is found here.

What is the new Apple operating system called?

Which macOS version is the latest? These are all Mac operating systems, starting with the most recent. When a major new macOS is released, it gets a new name, such as macOS Big Sur.