Mac OS X, OS X, and macOS Version Information

Version Codename Release Date Most Recent Version
Rhapsody Developer Release Titan1U August 31, 1997 DR2 (May 14, 1998)
Mac OS X Server 1.0 Hera March 16, 1999 1.2v3 (October 27, 2000)
Mac OS X Developer Preview n/a March 16, 1999 DP4 (April 5, 2000)
Mac OS X Public Beta Kodiak September 13, 2000 n/a
Mac OS X 10.0 Cheetah March 24, 2001 10.0.4 (June 22, 2001)
Mac OS X 10.1 Puma September 25, 2001 10.1.5 (June 6, 2002)
Mac OS X 10.2 Jaguar August 24, 2002 10.2.8 (October 3, 2003)
Mac OS X 10.3 Panther October 24, 2003 10.3.9 (April 15, 2005)
Mac OS X 10.4 Tiger April 29, 2005 10.4.11 (November 14, 2007)
Mac OS X 10.5 Leopard October 26, 2007 10.5.8 (August 5, 2009)
Mac OS X 10.6 Snow Leopard August 28, 2009 10.6.8 v1.1 (July 25, 2011)
Mac OS X 10.7 Lion July 20, 2011 10.7.5 (September 19, 2012)
OS X 10.8 Mountain Lion July 25, 2012 10.8.5 (12F45) (October 3, 2013)
OS X 10.9 Mavericks October 22, 2013 10.9.5 (13F1112) (September 18, 2014)
OS X 10.10 Yosemite October 16, 2014 10.10.5 (14F27) (August 13, 2015)
OS X 10.11 El Capitan September 30, 2015 10.11.6 (15G31) (July 18, 2016)
macOS 10.12 Sierra September 20, 2016 10.12.6 (16G29) (July 19, 2017)
macOS 10.13 High Sierra September 25, 2017 10.13.6 (17G65) (July 9, 2018)
macOS 10.14 Mojave September 24, 2018 10.14 (18A391) (September 24, 2018)
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