MacOS
From Computer History Wiki
macOS is the current operating system for the Apple Macintosh. It replaced the earlier Mac OS, and was based on NeXTSTEP, which became available when Apple bought NeXT. It is a distant descendant of UNIX, via Mach.
External links
- Deadmoo Tiger 10.4.1 - an ancient OS X 10.4 leak, the first publicly available version of OS X Tiger for x86 machines