Mac OS Versions By bfonollosam Aug 31, 1997 Rhapsody Devoloper Release Mar 16, 1999 Mac OS X Hera (1.0) Sep 13, 2000 Mac OS X Kodiak (Public Beta) Mar 24, 2001 Mac OS X Cheetah (10.0) Sep 25, 2001 Mac OS X Puma (10.1) Aug 24, 2002 Mac OS X Jaguar (10.2) Oct 24, 2003 Mac OS X Panther (10.3) Apr 29, 2005 Mac OS X Tiger (10.4) Oct 26, 2006 Mac OS X Leopard (10.5) Aug 28, 2009 Mac OS X Snow Leopard (10.6) Jul 20, 2011 Mac OS X Lion Jul 25, 2012 OS X Mountain Lion (10.9) Oct 22, 2013 OS X Maveriks (10.9) Oct 16, 2014 OS X Yosemite (10.10) Sep 30, 2015 OS X El Capitan (10.11) Sep 20, 2016 macOS Sierra (10.12) Sep 25, 2017 macOS High Sierra (10.13) Sep 24, 2018 macOS Mojave (10.14) Oct 7, 2019 macOS Catalina (10.15) Nov 12, 2020 macOS Big Sur (11.6) Oct 25, 2021 macOS Monterey(12.0)
