Mac OS, operating system (OS) developed by the American computer company Apple Inc. The OS was introduced in 1984 to run the company’s Macintosh line of personal computers (PCs).

Who came first Mac or Windows?

According to Wikipedia, the first successful personal computer to feature a mouse and a graphical user interface (GUI) was the Apple Macintosh, and it was introduced on the 24th of January 1984. About a year later, Microsoft introduced Microsoft Windows in November 1985 in response to the growing interest in the GUIs.

Is macOS Linux or Unix based?

macOS is a UNIX 03-compliant operating system certified by The Open Group. It has been since 2007, starting with MAC OS X 10.5. The only exception was Mac OS X 10.7 Lion, but compliance was regained with OS X 10.8 Mountain Lion. Amusingly, just as GNU stands for “GNU’s Not Unix,” XNU stands for “X is Not Unix.”