1978 In June of 1978
Apple introduces Apple DOS 3.1, the first operating system for the Apple
computers.
1984 Apple introduces
System 1.
1985 Apple introduces
System 2.
1986 Apple introduces
System 3.
1987 Apple introduces
System 4.
1988 Apple introduces
System 6.
1991 Apple introduces
System 7 operating system 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 introduces
Mac OS 8.
1997 Apple buys NeXT
Software Inc. for $400 million and acquires Steve Jobs, Apples cofounder, as a
consultant.
1999 Apple introduces
Mac OS 9.
1999 Apple releases
Mac OS X Server 1.0 on March 16, 1999.
2001 Apple introduces
Mac OS X 10.0 code named Cheetah and becomes available
March 24, 2001.
2001 Apple introduces
Mac OS X 10.1 code named Puma and becomes available on
September 25, 2001.
2002 Apple introduces
Mac OS X 10.2 code named Jaguar and becomes available on
August 23, 2002.
2003 Apple introduces
Mac OS X 10.3 code named Panther October 25, 2003.
2004 Apple introduces
Mac OS X 10.4 code named Tiger at the WWDC on June 28, 2004.
2007 Apple introduces
Mac OS X 10.5 code named Leopard October 26, 2007.
2008 Apple introduces
MobileMe at the WWDC on June 9, 2008.
2009 Apple introduces
Mac OS X 10.6 code named Snow Leopard at the WWDC on June 8, 2009.
2010 Apple introduces
Mac OS X 10.7 code named Lion at the "Back to the Mac" event on
October 20, 2010.
2012 Apple releases
Mac OS X 10.8 code named Mountain Lion on July 25, 2012.
2013 Apple introduces
Mac OS X 10.9 code named Mavericks at the WWDC on June 10, 2013.
2014 Apple introduces
Mac OS X 10.10 code named Yosemite at the WWDC on June 2, 2014.
