The following is a list of operating systems released by Apple Inc. As of 2025, there are six supported software platforms: iOS, iPadOS, watchOS, tvOS, macOS and visionOS.
Prior to the introduction of the Macintosh in early 1984, Apple had several operating systems for the Apple II series, Apple SOS for the Apple III series, and Lisa OS and MacWorks XL for the Apple Lisa series; those were introduced between 1977 and 1983.
The original operating system for the Macintosh was the classic Mac OS, which was introduced in early 1984 as System Software. In 1997, System Software was renamed Mac OS.
In 1999, Mac OS X Server 1.0 was released, followed by Mac OS X 10.0, the first consumer release of the Mac OS X.
From the release of Mac OS X 10.0 until early 2007, Mac OS X was the only software platform. In early 2007, iPhone OS was introduced, increasing the number of software platforms by one, from one to two. In 2010, iPhone OS was renamed iOS. In 2011, Mac OS X was renamed OS X. In early 2015, the number of software platforms rose by one, from two to three, as watchOS was introduced. In late 2015, tvOS was introduced, increasing the number of software platforms again by one, from three to four. In 2016, OS X was renamed macOS. In 2019, iPadOS was introduced as the derived version of iOS for iPad, increasing the number of software platforms again by one, from four to five. In 2020, macOS received an increment in its version, from 10 to 11. In 2023, the number of software platforms rose again by one, from five to six, as visionOS was introduced.
Apple computers
Apple II Apple DOS is the first operating system for Apple computers. Apple ProDOS Apple GS/OS
Apple III Apple SOS
Apple Lisa Lisa OS MacWorks XL
Mac
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
macOS was initially called 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 Jaguar – 10.2 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 (free) OS X Yosemite – 10.10 (free) OS X El Capitan – 10.11 (free) macOS Sierra – 10.12 (free) macOS High Sierra – 10.13 (free) macOS Mojave – 10.14 (free) macOS Catalina – 10.15 (free) macOS Big Sur – 11 (free) macOS Monterey – 12 (free) macOS Ventura – 13 (free) macOS Sonoma – 14 (free) macOS Sequoia – 15 (free) macOS Tahoe – 26 (free) macOS Golden Gate – 27 (free) macOS Server
macOS Server was initially called 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 bridgeOS – powers the Touch Bar and other internal components 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
Mobile devices Newton Newton OS
iPod
iPod OS
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 "Mac OS X" (now known as "macOS") 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 iOS 13 iOS 14 iOS 15 iOS 16 iOS 17 iOS 18 iOS 26 iOS 27
iPadOS
At its June 2019 Worldwide Developer Conference, Apple introduced iPadOS, a version of iOS, for iPad tablets, promised for fall 2019 release. iPadOS 13 – derived from iOS 13 iPadOS 14 – derived from iOS 14 iPadOS 15 – derived from iOS 15 iPadOS 16 - derived from iOS 16 iPadOS 17 - derived from iOS 17 iPadOS 18 - derived from iOS 18 iPadOS 26 - derived from iOS 26 iPadOS 27 - derived from iOS 27
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 watchOS 8 – derived from iOS 15 watchOS 9 – derived from iOS 16 watchOS 10 – derived from iOS 17 watchOS 11 – derived from iOS 18 watchOS 26 – derived from iOS 26 watchOS 27 – derived from iOS 27
Living room 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 tvOS 13 – derived from iOS 13 tvOS 14 – derived from iOS 14 tvOS 15 – derived from iOS 15 tvOS 16 – derived from iOS 16 tvOS 17 – derived from iOS 17 tvOS 18 – derived from iOS 18 tvOS 26 – derived from iOS 26 tvOS 27 – derived fron iOS 27
audioOS Also known as "HomePod Software". audioOS 11 (iOS 11) – derived and marketed as part of iOS 11 audioOS 12 (iOS 12) – derived and marketed as part of iOS 12 audioOS 13 – derived and marketed as part of iOS 13 for versions until audioOS 13.4 and derived from tvOS 13 and marketed as a standalone minor operating system for versions after audioOS 13.4. audioOS 14 – derived from tvOS 14 audioOS 15 – derived from tvOS 15 audioOS 16 – derived from tvOS 16 audioOS 17 – derived from tvOS 17 audioOS 18 – derived from tvOS 18 audioOS 26 – derived from tvOS 26 audioOS 27 – derived from tvOS 27
visionOS
visionOS 1 – derived from iOS 17 visionOS 2 – derived from iOS 18 visionOS 26 – derived from iOS 26 visionOS 27 – derived from iOS 27
Table of operating systems + Device(s) OS Release Announced Released Discontinued NotesApple IIApple DOSJune 19781983Apple ProDOS19831993Apple GS/OS1988Apple IIIApple SOS1980Apple LisaLisa OS1983MacWorks XL1984Macintosh computers (68k)Classic Mac OSSystem 1System 21985System 31986System 41987System Software 5 Also marketed as System 5System Software 61988 Also marketed as System 6Macintosh computers (68k and PowerPC)System 71991 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 81997Macintosh computers (PowerPC)Mac OS 91999Mac OS X/OS X/macOSMac OS X Public BetaSeptember 13, 2000May 14, 2001 Code name KodiakMac OS X 10.0September 13, 2000March 24, 2001 Code name CheetahMac OS X 10.1September 25, 2001 Code name PumaMac OS X JaguarAugust 23, 2002 Version 10.2 First release with a marketing nameMac OS X PantherOctober 24, 2003 Version 10.3Macintosh computers (PowerPC and x86)Mac OS X TigerApril 29, 2005 Version 10.4Mac OS X LeopardOctober 26, 2007 Version 10.5Macintosh computers (x86)Mac OS X Snow LeopardAugust 28, 2009 Version 10.6Mac OS X LionJuly 20, 2011 Version 10.7 Also marketed as OS X LionOS X Mountain LionJune 11, 2012July 25, 2012 Version 10.8OS X MavericksJune 10, 2013October 22, 2013 Version 10.9OS X YosemiteJune 2, 2014October 16, 2014 Version 10.10OS X El CapitanJune 8, 2015September 30, 2015 Version 10.11macOS SierraJune 13, 2016September 20, 2016 Version 10.12macOS High SierraJune 5, 2017September 25, 2017 Version 10.13macOS MojaveJune 4, 2018September 24, 2018 Version 10.14 Final version of macOS to support 32-bit hardware and softwaremacOS CatalinaJune 3, 2019October 7, 2019 Version 10.15 First version of macOS with only 64-bit hardware and software support; 32-bit hardware and software support droppedMacintosh computers (x86 and ARM64)macOS Big SurJune 22, 2020November 12, 2020 Version 11macOS MontereyJune 7, 2021October 25, 2021 Version 12macOS VenturaJune 6, 2022October 24, 2022 Version 13macOS SonomaJune 5, 2023September 26, 2023 Version 14macOS SequoiaJune 10, 2024 Version 15Macintosh computers (PowerPC)Mac OS X ServerMac OS X Server 1.0March 16, 1999March 16, 1999 Code name Hera Also referred to as RhapsodyMac OS X Server 10.0May 21, 2001 Code name CheetahMac OS X Server 10.1September 25, 2001 Code name PumaMac OS X Server 10.2August 23, 2002 Code name JaguarMac OS X Server 10.3October 24, 2003 Code name PantherMacintosh computers (PowerPC and x86)Mac OS X Server 10.4April 29, 2005 Code name TigerMac OS X Server 10.5October 26, 2007 Also marketed as Leopard ServerMacintosh computers (68k)A/UXFebruary 1988Macintosh computers (PowerPC)MkLinuxCoplandN/A Never releasedOther computersNeXTSTEPSeptember 18, 1989 Developed by NeXT, which Apple bought in 1997OpenStep1994DarwinNovember 15, 2000A/ROSEAIX for Apple Network ServersMacintosh Application EnvironmentPowerOpen EnvironmentStar TrekN/A Never releasedTaligentNewtonNewton OSAugust 3, 1993February 27, 1998iPodiPod OS See also iPod firmwareApple TVApple TV Software (x86)Apple TV Software 1September 12, 2006March 21, 2007February 12, 2008 Derived from Mac OS X 10.4 Tiger Used an updated Front Row interfaceApple TV Software 2January 15, 2008February 12, 2008October 2009 Derived from Mac OS X 10.4 Tiger Also marketed as Apple TV Take Two Removed Front RowApple TV Software 3October 2009 Derived from Mac OS X 10.4 TigerApple TV Software (ARM)Apple TV Software 4September 1, 2010 Derived from iOS 4 and iOS 5Apple TV Software 5March 7, 2012 Derived from iOS 5 and iOS 6Apple TV Software 6September 20, 2013 Derived from iOS 7Apple TV Software 7September 17, 2014 Derived from iOS 8tvOStvOS 9 September 9, 2015 October 30, 2015 Derived from iOS 9 First version of tvOStvOS 10 June 13, 2016 September 13, 2016 Derived from iOS 10 Second version of tvOStvOS 11 June 5, 2017 September 19, 2017 Derived from iOS 11 Third version of tvOStvOS 12 June 4, 2018 September 17, 2018 Derived from iOS 12 Fourth version of tvOStvOS 13 June 3, 2019 September 19, 2019 Derived from iOS 13 Fifth version of tvOStvOS 14 June 22, 2020 September 16, 2020 Derived from iOS 14 Sixth version of tvOStvOS 15 June 7, 2021 September 20, 2021 Derived from iOS 15 Seventh version of tvOStvOS 16 June 6, 2022 September 12, 2022 Derived from iOS 16 Eighth version of tvOStvOS 17 June 5, 2023 September 18, 2023 Derived from iOS 17 Ninth version of tvOStvOS 18 June 10, 2024 Derived from iOS 18