Mac OS is based on a BSD code base, while Linux is an independent development of a unix-like system. This means that these systems are similar, but not binary compatible. Furthermore, Mac OS has lots of applications that are not open source and are build on libraries that are not open source.

Is Mac a Unix or Linux?

macOS is a UNIX 03-compliant operating system certified by The Open Group.

Is Mac a Windows or Linux?

We mainly have three kinds of operating systems, namely, Linux, MAC, and Windows. To begin with, MAC is an OS that focuses on the graphical user interface and was developed by Apple, Inc, for their Macintosh systems. Microsoft developed the Windows operating system.