MAC High Sierra 10.13.5.iso

macOS (/ˌmækoʊˈɛs/;[8] previously Mac OS X and later OS X) is a series of proprietary graphical operating systems developed and marketed by Apple Inc. since 2001. It is the primary operating system for Apple's Mac computers. 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.[9][10]


macOS is the direct successor to the classic Mac OS, the line of Macintosh operating systems with nine releases from 1984 to 1999. macOS adopted the Unix kernel and inherited technologies developed between 1985 and 1997 at NeXT, the company that Apple co-founder Steve Jobs created after leaving Apple in 1985. Releases from Mac OS X 10.5 Leopard[11] and thereafter are UNIX 03 certified.[12] Apple's mobile operating system, iOS, has been considered a variant of macOS.[13]





Download macOS High Sierra