The first desktop version of the system was released on March 24, 2001, supporting the Aqua user interface. Since then, several more versions adding newer features and technologies have been released. Since 2011, new releases have been offered on an annual basis.[4]
- Mac OS X 10.0 – code name “Cheetah”, released in 2001
- Mac OS X 10.1 – code name “Puma”, released in 2001
- Mac OS X 10.2 – also marketed as “Jaguar”, released in 2002
- Mac OS X Panther – version 10.3, released in 2003
- Mac OS X Tiger – version 10.4, released in 2005
- Mac OS X Leopard – version 10.5, released in 2007
- Mac OS X Snow Leopard – version 10.6, released in 2009
- Mac OS X Lion – version 10.7, released in 2011
- OS X Mountain Lion – version 10.8, released in 2012
- OS X Mavericks – version 10.9, released in 2013
- OS X Yosemite – version 10.10, released in 2014
- OS X El Capitan – version 10.11, released in 2015
- macOS Sierra – version 10.12, released in 2016
