What is MacOS Sierra?
{{DISPLAYTITLE:macOS Sierra}} {{Infobox OS version | logo = [[File:macOS Sierra wordmark.svg|250px|class=skin-invert]] | name = macOS Sierra | logo alt = | collapsible = | version of = [[macOS]] | developer = [[Apple Inc.]] | family = {{flatlist| *[[Macintosh operating systems|Macintosh]] *[[Unix]]<ref name=sierra_unix_cert>{{cite web|url=http://www.opengroup.org/openbrand/register/brand3627.htm|title=macOS version 10.12 Sierra on Intel-based Mac computers|publisher=The Open Group|access-date=September 29, 2016|url-status=live|archive-url=https://web.archive.org/web/20161002105135/http://www.opengroup.org/openbrand/register/brand3627.htm|archive-date=October 2, 2016}}</ref> }} | working state = | source model = [[Closed source|Closed]], with [[open-source software|open source]] components | RTM date = | GA date = {{Start date and age|2016|9|20}} | latest release version = 10.12.6 (16G2136)<ref>{{cite web|title=About the security content of macOS Mojave 10.14.6 Supplemental Update 2, Security Update 2019-005 High Sierra, and Security Update 2019-005 Sierra|url=https://support.apple.com/en-us/HT210589|website=Apple Support|date=September 26, 2019|access-date=September 26, 2019|archive-date=December 21, 2020|archive-url=https://web.archive.org/web/20201221190905/https://support.apple.com/en-us/HT210589|url-status=live}}</ref> | latest release date = {{Start date and age|2019|9|26}} | latest preview version = | latest preview date = | marketing target = | programmed in = | language = | update model = [[Mac App Store]] | package manager = | supported platforms = [[x86-64]] | kernel type = [[Hybrid kernel|Hybrid]] ([[XNU]]) | userland = | ui = | license = [[Apple Public Source License|APSL]] and Apple [[Software license agreement|EULA]] | preceded by = [[OS X El Capitan]] | succeeded by = [[macOS High Sierra]] | website = {{webarchive|url=https://web.archive.org/web/20170830032643/www.apple.com/macos/sierra|date=August 30, 2017|title=macOS - Apple}} | tagline = What can your Mac do now? Just ask. | support