The operating system for the Apple Macintosh computers. Mac OS was the first commercially successful operating system which used a graphical user interface. The Macintosh team included Bill Atkinson and Jef Raskin.
Different people have different memories and emphasis of how the Macintosh was developed, and where the underlying ideas originated. While the connection between the Macintosh and the Alto project at Xerox PARC has been firmly established in the historical record, the earlier contributions of Ivan Sutherland's Sketchpad and Doug Engelbart's On-Line System are no less significant. See History of the GUI.
- The switch from Motorola 68000 to PowerPC
- Mac OS X
- Mac OS X Server
/History of the Mac OS
See OS Advocacy.