Apple OS History

Updated: 05/21/2018 by Computer Hope
Year Event
1978 In June 1978, Apple introduced Apple DOS 3.1, the first operating system for the Apple computers.
1984 Apple introduced System 1 in 1984.
1985 Apple introduced System 2 in 1985.
1986 Apple introduced System 3 in 1986.
1987 Apple introduced System 4 in 1987.
1988 Apple introduced System 6 in 1988.
1991 Apple introduced System 7 operating system on May 13, 1991.
1995 Apple allows other computer companies to clone its computer by announcing its licensed the Macintosh operating system rights to Radius on January 4.
1997 Apple introduced macOS 8 in 1997.
1997 Apple buys NeXT Software Inc. for $400 million and acquires Steve Jobs, Apple co-founder, as a consultant.
1999 Apple introduced macOS 9 in 1999.
1999 Apple released macOS X Server 1.0 on March 16, 1999.
2001 Apple introduced macOS X 10.0 code-named Cheetah and became available on March 24, 2001.
2001 Apple introduced macOS X 10.1 code-named Puma and became available on September 25, 2001.
2002 Apple introduced macOS X 10.2 code-named Jaguar and became available on August 23, 2002.
2003 Apple introduced macOS X 10.3 code-named Panther on October 25, 2003.
2004 Apple introduced macOS X 10.4 code-named Tiger at the WWDC on June 28, 2004.
2007 Apple introduced macOS X 10.5 code-named Leopard on October 26, 2007.
2008 Apple introduced MobileMe at the WWDC on June 9, 2008.
2009 Apple introduced macOS X 10.6 code-named Snow Leopard at the WWDC on June 8, 2009.
2010 Apple introduced macOS X 10.7 code-named Lion at the "Back to the Mac" event on October 20, 2010.
2012 Apple released macOS X 10.8 code-named Mountain Lion on July 25, 2012.
2013 Apple introduced macOS X 10.9 code-named Mavericks at the WWDC on June 10, 2013.
2014 Apple introduced macOS X 10.10 code-named Yosemite at the WWDC on June 2, 2014.

Computer History