List of Apple operating systems

The following is a list of operating systems released by Apple Inc.

Apple computers
There was no OS for the Apple I.

Apple II

Apple III

Apple Lisa

Macintosh computers
Main article: Macintosh operating systems

Classic Mac OS
Main article: Classic Mac OS
  • System 1
  • System 2
  • System 3
  • System 4
  • System Software 5 – also marketed as System 5
  • System Software 6 – also marketed as System 6
  • System 7 – System 7.5.1 was the first to refer to itself as Mac OS, Mac OS 7.6 was the first to be branded as "Mac OS"
  • Mac OS 8
  • Mac OS 9 – Mac OS 9.2.2 was the last version of Classic Mac OS

Mac OS X / OS X / macOS
Main article: macOS
See also: macOS version history

macOS was previously known as Mac OS X and later OS X.

macOS Server
Main article: macOS Server

macOS Server was previously known as Mac OS X Server and later OS X Server.

  • Mac OS X Server 1.0 – code name Hera, also referred to as Rhapsody
  • Mac OS X Server 10.0 – code name Cheetah
  • Mac OS X Server 10.1 – code name Puma
  • Mac OS X Server 10.2 – code name Jaguar
  • Mac OS X Server 10.3 – code name Panther
  • Mac OS X Server 10.4 – code name Tiger
  • Mac OS X Server 10.5 – also marketed as Leopard Server
  • Mac OS X Server 10.6 – also marketed as Snow Leopard Server

Starting with Lion, there is no separate Mac OS X Server operating system. Instead the server components are a separate download from the Mac App Store.

  • Mac OS X Lion Server – 10.7 – also marketed as OS X Lion Server
  • OS X Mountain Lion Server – 10.8 – also marketed as Mountain Lion Server
  • OS X Mavericks Server – 10.9 – also marketed as Mavericks Server
  • OS X Yosemite Server – 10.10 – also marketed as Yosemite Server 4.0
  • OS X 10.11 Server 5.0 – also marketed as OS X Server 5.0
  • OS X 10.11 Server 5.1 – also marketed as OS X Server 5.1
  • macOS 10.12 Server 5.2 – also marketed as macOS Server 5.2
  • macOS 10.12 Server 5.3 – also marketed as macOS Server 5.3
  • macOS 10.13 Server 5.4 – also marketed as macOS Server 5.4
  • macOS 10.13 Server 5.5 – also marketed as macOS Server 5.5

Others

Newton

iPod
  • iPod OS

Apple TV

Apple TV Software
  • Apple TV Software 1 – derived from Mac OS X 10.4 Tiger
  • Apple TV Software 2 – derived from Mac OS X 10.4 Tiger
  • Apple TV Software 3 – derived from Mac OS X 10.4 Tiger
  • Apple TV Software 4 – derived from iOS 4 and iOS 5
  • Apple TV Software 5 – derived from iOS 5 and iOS 6
  • Apple TV Software 6 – derived from iOS 7
  • Apple TV Software 7 – derived from iOS 8

There was no Apple TV Software 8, version 8 was skipped when moving to tvOS.

tvOS
Main article: tvOS
  • tvOS 9 – derived from iOS 9
  • tvOS 10 – derived from iOS 10
  • tvOS 11 – derived from iOS 11
  • tvOS 12 – derived from iOS 12
  • tvOS 13 - derived from iOS 13

iOS
Main article: iOS
See also: iOS version history

iOS was previously known as iPhone OS, despite also being available on the iPod Touch (1st, 2nd, and 3rd generations) and the original iPad.

iPadOS
Main article: iPadOS

At its June 2019 Worldwide Developer Conference, Apple introduced iPadOS, a version of iOS, for iPad tablets, promised for fall 2019 release.[2][3]

iPadOS
Main article: iPadOS

watchOS
Main article: watchOS
  • watchOS 1 – derived from iOS 8
  • watchOS 2 – derived from iOS 9
  • watchOS 3 – derived from iOS 10
  • watchOS 4 – derived from iOS 11
  • watchOS 5 – derived from iOS 12
  • watchOS 6 – derived from iOS 13
  • watchOS 7 – derived from iOS 14

Table of operating systems
Device(s)Platform(s)OSAnnouncedReleasedDiscontinuedNotes
Apple computers Apple II series Apple DOS June 1978 June 1978 1983
Apple ProDOS 1983 1983 1993
Apple GS/OS 1988 1988
Apple III Apple SOS 1980 1980
Apple Lisa Lisa OS 1983 1983
MacWorks XL 1984 1984
Macintosh computers (68k) Classic Mac OS System 1 1984 1984
System 2 1985 1985
System 3 1986 1986
System 4 1987 1987
System Software 5 1987 1987
  • Also marketed as System 5
System Software 6 1988 1988
  • Also marketed as System 6
Macintosh computers (68k and PowerPC) System 7 1991 1991
  • System 7.5.1 was the first to refer to itself as Mac OS
  • Mac OS 7.6 was the first to be branded as "Mac OS"
Mac OS 8 1997 1997
Macintosh computers (PowerPC) Mac OS 9 1999 1999
Mac OS X Mac OS X Public Beta September 13, 2000 September 13, 2000 May 14, 2001
  • Code name Kodiak
Mac OS X 10.0 September 13, 2000 March 24, 2001
  • Code name Cheetah
Mac OS X 10.1 September 25, 2001 September 25, 2001
  • Code name Puma
Mac OS X 10.2 August 23, 2002
  • Code name Jaguar
Mac OS X Panther October 24, 2003
  • Version 10.3
Macintosh computers (PowerPC and X86) Mac OS X Tiger April 29, 2005
  • Version 10.4
Mac OS X Leopard October 26, 2007
  • Version 10.5
Macintosh computers (X86) Mac OS X Snow Leopard August 28, 2009
  • Version 10.6
Mac OS X Lion July 20, 2011
  • Version 10.7
  • Also marketed as OS X Lion
OS X OS X Mountain Lion July 25, 2012
  • Version 10.8
OS X Mavericks October 22, 2013
  • Version 10.9
OS X Yosemite October 16, 2014
  • Version 10.10
OS X El Capitan June 8, 2015
  • Version 10.11
macOS macOS Sierra June 13, 2016
  • Version 10.12
macOS High Sierra June 5, 2017
  • Version 10.13
macOS Mojave September 24, 2018
  • Version 10.14
macOS Catalina October 7, 2019
  • Version 10.15
Macintosh computers (PowerPC) Mac OS X Server Mac OS X Server 1.0 March 16, 1999 March 16, 1999
  • Code name Hera
  • Also referred to as Rhapsody
Mac OS X Server 10.0 May 21, 2001
  • Code name Cheetah
Mac OS X Server 10.1 September 25, 2001
  • Code name Puma
Mac OS X Server 10.2 August 23, 2002
  • Code name Jaguar
Mac OS X Server 10.3 October 24, 2003
  • Code name Panther
Macintosh computers (PowerPC and X86) Mac OS X Server 10.4 April 29, 2005
  • Code name Tiger
Mac OS X Server 10.5 October 26, 2007
  • Also marketed as Leopard Server
Other computers NeXTSTEP September 18, 1989
OpenStep 1994
Darwin November 15, 2000
A/ROSE
A/UX
AIX for Apple Network Servers
Macintosh Application Environment
MkLinux
PowerOpen Environment
Star Trek N/A N/A
Taligent N/A N/A
Copland N/A N/A
Newton Newton Newton OS
iPod iPod iPod OS
  • See also iPod firmware
Apple TV Apple TV Software (X86) Apple TV Software 1 September 12, 2006 March 21, 2007 February 12, 2008
  • Derived from Mac OS X 10.4 Tiger
  • Used an updated Front Row interface
Apple TV Software 2 January 15, 2008[4] February 12, 2008[5] October 2009
  • Derived from Mac OS X 10.4 Tiger
  • Also marketed as Apple TV Take Two
  • Removed Front Row
Apple TV Software 3 October 2009
  • Derived from Mac OS X 10.4 Tiger
Apple TV Software (ARM) Apple TV Software 4
Apple TV Software 5
Apple TV Software 6
Apple TV Software 7[note 1]
tvOS tvOS 9[note 1]
tvOS 10
tvOS 11
tvOS 12
iOS devices (iPhone, iPod Touch, and iPad) iPhone OS[note 2] iPhone OS 1[note 2]
  • Derived from "OS X" (At the time, "macOS" was still known as "Mac OS X" and not "OS X" as it was known from 2012 to 2016.)
iPhone OS 2[note 2]
iPhone OS 3[note 2]
iOS[note 2] iOS 4[note 2]
  • Continued from iPhone OS 3
iOS 5
iOS 6
iOS 7
iOS 8
iOS 9
iOS 10
iOS 11
Apple Watch watchOS watchOS 1
  • Derived from iOS 8
watchOS 2
  • Derived from iOS 9
watchOS 3
  • Derived from iOS 10
watchOS 4
  • Derived from iOS 11
watchOS 5
  • Derived from iOS 12

Notes
  1. There was no Apple TV Software 8 or tvOS 8, version 8 was skipped when moving to tvOS.
  2. iOS was previously known as iPhone OS, despite also being available on the iPod Touch (1st, 2nd, and 3rd generations) and the original iPad.
  1. Apple OS History. Computer Hope. 05/21/2018. [2019-01-11].
  2. Warren, Tom (2019-06-03). "Apple reveals iPadOS for iPad with a new home screen, multitasking improvements, and more". The Verge. Retrieved 2019-06-17.
  3. Jaffe, Justin. "Apple introduces iPadOS, giving iPads their own operating system". CNET. Retrieved 2019-06-17.
  4. http://www.macnn.com/articles/08/01/15/apple.tv.take.2/
  5. http://www.macnn.com/articles/08/02/12/apple.tv.take.2.update/
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