Mac OS Editions

Mac OS 10.15 Catalina
macOS 10.15 Catalina release date October 7, 2019
Current Version 10.15.1 – released October 29, 2019
System Requirements Manual
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Mac OS 10.14 – Mojave
macOS 10.14 Mojave release date September 24, 2018
Current Version 10.14.6 – released July 22, 2019
System Requirements Manual
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Mac OS 10.13 – High Sierra
macOS 10.13 High Sierra release date September 25, 2017

Current Version 10.13.6 – released July 9, 2018
System Requirements Manual
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Mac OS 10.12 – Sierra
macOS 10.12 Sierra release date September 20, 2016
Current Version 10.12.6 – released July 19, 2017 (End of Life no more updates)
System Requirements  Manual
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Mac OS 10.11 – El Capitan
macOS 10.11 El Capitan release date September 30, 2015
Current Version 10.11.6 – released July 18, 2016 (End of Life no more updates)

System Requirements  Manual
Download

Mac OS 10.10 – Yosemite
macOS 10.10 Yosemite release date October 16, 2014
Currently Version 10.10.5 – released August 13, 2015 (End of Life no more update)

System Requirements  Manual

Mac OS 10.9 – Mavericks
macOS 10.9 Mavericks release date October 22, 2013
Current Version 10.9.5 – released September 17, 2014
(End of Life no more updates)
System Requirements

Mac OS 10.8 – Mountain Lion
macOS 10.8 Mountain Lion release date July 25, 2012
Current Version 10.8.5 – released  October 3, 2013 (End of Life no more updates)
System Requirements

Mac OS 10.7 – Lion
macOS 10.7 Lion release date July 20, 2011
Current Version 10.7.5 – released October 4, 2012 (End of Life no more updates)

System Requirements
End of Rosetta Support – Old PowerPC Mac Application Support

Mac OS 10.6 – Snow Leopard
macOS 10.6 release date August 28, 2010
Current Version 10.6.8 – released July 25, 2011 (End of Life no more updates)
System Requirements  Manual

To check your Mac OS Version click the Apple Menu and choose About this Mac.

It is best to have the most current version of Mac OS that your applications and your Mac can support, this will provide you the most secure system for your use.