http://kb.ttsd.k12.or.us/articles/view/383

macOS: Code Names

Last modified on 04/03/2020

List of Apple's code names for all OS X (now "macOS") versions.

 

 

OS Version Code Name Release Date
Public Beta Kodiak September 13, 2000
10.0 Cheetah March 24, 2001
10.1 Puma September 25th, 2001
10.2 Jaguar August 23, 2002
10.3 Panther October 24, 2003
10.4 Tiger April 29, 2005
10.5 Leopard October 26, 2007
10.6 Snow Leopard August 28, 2009
10.7 Lion July 20, 2011
10.8 Mountain Lion July 25, 2012
10.9 Mavericks October 22, 2013
10.10 Yosemite October 16, 2014
10.11 El Capitan September 30, 2015
10.121 Sierra September 20, 2016
10.13 High Sierra September 25, 2017
10.14 Mojave September 24, 2018
10.15 Catalina October 7, 2019

 

 

1. First release to move from "OS X" name to "macOS," most likely to bring it in line with the iOS and tvOS naming convention.

macos   os x   
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