List of Apple operating systems

Apple computers

Apple II

• Apple DOS is the first operating system for Apple computers^[1]
• Apple ProDOS
• Apple GS/OS

Apple III

• Apple SOS

Apple Lisa

• Lisa OS
• MacWorks XL

Macintosh computers

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

macOS

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

• Mac OS X Public Beta – code name Kodiak
• Mac OS X 10.0 – code name Cheetah
• Mac OS X 10.1 – code name Puma
• Mac OS X 10.2 – also marketed as Jaguar
• Mac OS X Panther – 10.3
• Mac OS X Tiger – 10.4
• Mac OS X Leopard – 10.5
• Mac OS X Snow Leopard – 10.6
• Mac OS X Lion – 10.7 – also marketed as OS X Lion
• OS X Mountain Lion – 10.8
• OS X Mavericks – 10.9
• OS X Yosemite – 10.10
• OS X El Capitan – 10.11
• macOS Sierra – 10.12
• macOS High Sierra – 10.13
• macOS Mojave – 10.14

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

Other macOS-related releases

• NeXTSTEP
• OpenStep
• Darwin

Others

• A/ROSE
• A/UX
• AIX for Apple Network Servers
• Macintosh Application Environment
• MkLinux
• PowerOpen Environment
• Star Trek – unreleased
• Taligent – unreleased
• Copland – unreleased

Newton

• Newton OS

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

• tvOS 9 – derived from iOS 9
• tvOS 10 – derived from iOS 10
• tvOS 11 – derived from iOS 11
• tvOS 12 – derived from iOS 12

iOS

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

• iPhone OS 1 – 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
• iPhone OS 3
• iOS 4 – continued from iPhone OS 3
• iOS 5
• iOS 6
• iOS 7
• iOS 8
• iOS 9
• iOS 10
• iOS 11
• iOS 12

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

Table of operating systems

Device(s)	Platform(s)	OS	Announced	Released	Discontinued	Notes
Other computers		NeXTSTEP		September 18, 1989
Other computers		OpenStep		1994
Other computers		Darwin		November 15, 2000
Other computers		A/ROSE
Other computers		A/UX
Other computers		AIX for Apple Network Servers
Other computers		Macintosh Application Environment
Other computers		MkLinux
Other computers		PowerOpen Environment
Other computers		Star Trek		N/A	N/A
Other computers		Taligent		N/A	N/A
Other computers		Copland		N/A	N/A
Newton	Newton	Newton OS
Macintosh computers (X86)	Mac OS X	Mac OS X Snow Leopard		August 28, 2009		Version 10.6
Macintosh computers (X86)	Mac OS X	Mac OS X Lion		July 20, 2011		Version 10.7 Also marketed as OS X Lion
Macintosh computers (X86)	OS X	OS X Mountain Lion		July 25, 2012		Version 10.8
Macintosh computers (X86)	OS X	OS X Mavericks		October 22, 2013		Version 10.9
Macintosh computers (X86)	OS X	OS X Yosemite		October 16, 2014		Version 10.10
Macintosh computers (X86)	OS X	OS X El Capitan		June 8, 2015		Version 10.11
Macintosh computers (X86)	macOS	macOS Sierra		June 13, 2016		Version 10.12
Macintosh computers (X86)	macOS	macOS High Sierra		June 5, 2017		Version 10.13
Macintosh computers (X86)	macOS	macOS Mojave		September 24, 2018		Version 10.14
Macintosh computers (PowerPC)	Classic Mac OS	Mac OS 9	1999	1999
Macintosh computers (PowerPC)	Mac OS X	Mac OS X Public Beta	September 13, 2000	September 13, 2000	May 14, 2001	Code name Kodiak
Macintosh computers (PowerPC)	Mac OS X	Mac OS X 10.0	September 13, 2000	March 24, 2001		Code name Cheetah
Macintosh computers (PowerPC)	Mac OS X	Mac OS X 10.1	September 25, 2001	September 25, 2001		Code name Puma
Macintosh computers (PowerPC)	Mac OS X	Mac OS X 10.2		August 23, 2002		Code name Jaguar
Macintosh computers (PowerPC)	Mac OS X	Mac OS X Panther		October 24, 2003		Version 10.3
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
Macintosh computers (PowerPC)	Mac OS X Server	Mac OS X Server 10.0		May 21, 2001		Code name Cheetah
Macintosh computers (PowerPC)	Mac OS X Server	Mac OS X Server 10.1		September 25, 2001		Code name Puma
Macintosh computers (PowerPC)	Mac OS X Server	Mac OS X Server 10.2		August 23, 2002		Code name Jaguar
Macintosh computers (PowerPC)	Mac OS X Server	Mac OS X Server 10.3		October 24, 2003		Code name Panther
Macintosh computers (PowerPC and X86)	Mac OS X	Mac OS X Tiger		April 29, 2005		Version 10.4
Macintosh computers (PowerPC and X86)	Mac OS X	Mac OS X Leopard		October 26, 2007		Version 10.5
Macintosh computers (PowerPC and X86)	Mac OS X Server	Mac OS X Server 10.4		April 29, 2005		Code name Tiger
Macintosh computers (PowerPC and X86)	Mac OS X Server	Mac OS X Server 10.5		October 26, 2007		Also marketed as Leopard Server
Macintosh computers (68k)	Classic Mac OS	System 1	1984	1984
Macintosh computers (68k)	Classic Mac OS	System 2	1985	1985
Macintosh computers (68k)	Classic Mac OS	System 3	1986	1986
Macintosh computers (68k)	Classic Mac OS	System 4	1987	1987
Macintosh computers (68k)	Classic Mac OS	System Software 5	1987	1987		Also marketed as System 5
Macintosh computers (68k)	Classic Mac OS	System Software 6	1988	1988		Also marketed as System 6
Macintosh computers (68k and PowerPC)	Classic Mac OS	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”
Macintosh computers (68k and PowerPC)	Classic Mac OS	Mac OS 8	1997	1997
iPod	iPod	iPod OS				See also iPod firmware
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.)
iOS devices (iPhone, iPod Touch, and iPad)	iPhone OS[note 2]	iPhone OS 2[note 2]
iOS devices (iPhone, iPod Touch, and iPad)	iPhone OS[note 2]	iPhone OS 3[note 2]
iOS devices (iPhone, iPod Touch, and iPad)	iOS[note 2]	iOS 4[note 2]				Continued from iPhone OS 3
iOS devices (iPhone, iPod Touch, and iPad)	iOS[note 2]	iOS 5
iOS devices (iPhone, iPod Touch, and iPad)	iOS[note 2]	iOS 6
iOS devices (iPhone, iPod Touch, and iPad)	iOS[note 2]	iOS 7
iOS devices (iPhone, iPod Touch, and iPad)	iOS[note 2]	iOS 8
iOS devices (iPhone, iPod Touch, and iPad)	iOS[note 2]	iOS 9
iOS devices (iPhone, iPod Touch, and iPad)	iOS[note 2]	iOS 10
iOS devices (iPhone, iPod Touch, and iPad)	iOS[note 2]	iOS 11
Apple Watch	watchOS	watchOS 1				Derived from iOS 8
Apple Watch	watchOS	watchOS 2				Derived from iOS 9
Apple Watch	watchOS	watchOS 3				Derived from iOS 10
Apple Watch	watchOS	watchOS 4				Derived from iOS 11
Apple Watch	watchOS	watchOS 5				Derived from iOS 12
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	Apple TV Software (X86)	Apple TV Software 2	January 15, 2008[2]	February 12, 2008[3]	October 2009	Derived from Mac OS X 10.4 Tiger Also marketed as Apple TV Take Two Removed Front Row
Apple TV	Apple TV Software (X86)	Apple TV Software 3		October 2009		Derived from Mac OS X 10.4 Tiger
Apple TV	Apple TV Software (ARM)	Apple TV Software 4				Derived from iOS 4 and iOS 5
Apple TV	Apple TV Software (ARM)	Apple TV Software 5				Derived from iOS 5 and iOS 6
Apple TV	Apple TV Software (ARM)	Apple TV Software 6				Derived from iOS 7
Apple TV	Apple TV Software (ARM)	Apple TV Software 7[note 1]				Derived from iOS 8
Apple TV	tvOS	tvOS 9[note 1]				Derived from iOS 9
Apple TV	tvOS	tvOS 10				Derived from iOS 10
Apple TV	tvOS	tvOS 11				Derived from iOS 11
Apple TV	tvOS	tvOS 12				Derived from iOS 12
Apple computers	Apple II series	Apple DOS	June 1978	June 1978	1983
Apple computers	Apple II series	Apple ProDOS	1983	1983	1993
Apple computers	Apple II series	Apple GS/OS	1988	1988
Apple computers	Apple III	Apple SOS	1980	1980
Apple computers	Apple Lisa	Lisa OS	1983	1983
Apple computers	Apple Lisa	MacWorks XL	1984	1984

Notes