Mac Operating Systems

Mac Operating System 1 is introduced

Jan 24, 1984

Mac Operating System 2 is introduced

Apr 1, 1985

Mac Operating System 3 is introduced

Jan 1, 1986

Mac Operating System 4 is introduced

Mar 1, 1987

Mac Operating System 6 is introduced

Jun 1, 1988

Mac Operating System 7 is introduced

May 13, 1991

Mac Operating System 8 is introduced

Jul 22, 1997

Mac Operating System 9 is introduced

Oct 23, 1999

Mac Operating System 10.0 Cheetah is introduced

Mar 24, 2001

Mac Operating System 10.1 Puma is introduced

Sep 25, 2001

Mac Operating System 10.2 Jaguar is introduced

Aug 23, 2002

Mac Operating System 10.3 Panther is introduced

Oct 25, 2003

Mac Operating System 10.4 Tiger is introduced

Jun 28, 2004

Mac Operating System 10.5 Leopard is introduced

Oct 26, 2007

Mac Operating System 10.6 Snow Leopard is introduced

Jun 9, 2008

Mac Operating System 10.7 Lion is introduced

Jul 20, 2011

Mac Operating System 10.8 Mountain Lion is introduced

Jul 25, 2012