<P> Launched in 2001 as Mac OS X , the series is the latest in the family of Macintosh operating systems . Mac OS X succeeded `` classic '' Mac OS , which was introduced in 1984 , and the final release of which was Mac OS 9 in 1999 . An initial , early version of the system , Mac OS X Server 1.0 , was released in 1999 . The first desktop version , Mac OS X 10.0 , followed in March 2001 . Releases were code named after big cats from the original release up until OS X 10.8 Mountain Lion . Beginning in 2013 with OS X 10.9 Mavericks , releases have been named after landmarks in California . Apple changed the original name `` Mac OS X '' to `` OS X '' in 2012 and then to `` macOS '' in 2016 , adopting the nomenclature that it uses for their other operating systems , iOS , watchOS , and tvOS . The latest version of macOS is macOS High Sierra , which was publicly released in September 2017 . </P>
<P> Launched in 2001 as Mac OS X , the series is the latest in the family of Macintosh operating systems . Mac OS X succeeded `` classic '' Mac OS , which was introduced in 1984 , and the final release of which was Mac OS 9 in 1999 . An initial , early version of the system , Mac OS X Server 1.0 , was released in 1999 . The first desktop version , Mac OS X 10.0 , followed in March 2001 . Releases were code named after big cats from the original release up until OS X 10.8 Mountain Lion . Beginning in 2013 with OS X 10.9 Mavericks , releases have been named after landmarks in California . Apple changed the original name `` Mac OS X '' to `` OS X '' in 2012 and then to `` macOS '' in 2016 , adopting the nomenclature that it uses for their other operating systems , iOS , watchOS , and tvOS . The latest version of macOS is macOS High Sierra , which was publicly released in September 2017 . </P>
what is the latest version on mac os
what is the latest version on mac os
macOS High Sierra
macOS High Sierra