The following is a list of

operating system An operating system (OS) is system software that manages computer hardware and software resources, and provides common daemon (computing), services for computer programs. Time-sharing operating systems scheduler (computing), schedule tasks for ...

s released by

Apple Inc. Apple Inc. is an American multinational corporation and technology company headquartered in Cupertino, California, in Silicon Valley. It is best known for its consumer electronics, software, and services. Founded in 1976 as Apple Comput ...

As of 2025, there are six supported software platforms:

iOS Ios, Io or Nio (, ; ; locally Nios, Νιός) is a Greek island in the Cyclades group in the Aegean Sea. Ios is a hilly island with cliffs down to the sea on most sides. It is situated halfway between Naxos and Santorini. It is about long an ...

iPadOS iPadOS is a mobile operating system developed by Apple for its iPad line of tablet computers. It was given a name distinct from iOS, the operating system used by Apple's iPhones to reflect the diverging features of the two product lines, suc ...

watchOS watchOS is the operating system of the Apple Watch, developed by Apple Inc., Apple. It is based on iOS, the operating system used by the iPhone, and has many similar features. It was released on April 24, 2015, along with the Apple Watch, the o ...

tvOS tvOS (formerly Apple TV Software) is an operating system developed by Apple for the Apple TV, a digital media player. In the first-generation Apple TV, Apple TV Software was based on Mac OS X. The software for the second-generation and later ...

macOS macOS, previously OS X and originally Mac OS X, is a Unix, Unix-based operating system developed and marketed by Apple Inc., Apple since 2001. It is the current operating system for Apple's Mac (computer), Mac computers. With ...

and

visionOS visionOS is a mixed reality operating system derived primarily from iPadOS and its core frameworks (including UIKit, SwiftUI, ARKit and RealityKit), and MR-specific frameworks for foveated rendering and real-time interaction. It was develope ...

. Prior to the introduction of the

Macintosh Mac is a brand of personal computers designed and marketed by Apple Inc., Apple since 1984. The name is short for Macintosh (its official name until 1999), a reference to the McIntosh (apple), McIntosh apple. The current product lineup inclu ...

in early 1984, Apple had several operating systems for the

Apple II Apple II ("apple Roman numerals, two", stylized as Apple ][) is a series of microcomputers manufactured by Apple Computer, Inc. from 1977 to 1993. The Apple II (original), original Apple II model, which gave the series its name, was designed ...

series,

Apple SOS The Sophisticated Operating System, or SOS (), is the primary operating system of the Apple III computer. SOS was developed by Apple Computer and released in October 1980. In 1985, Steve Wozniak, while critical of the Apple III's hardware ...

for the Apple III series, and Lisa OS and

MacWorks XL MacWorks XL is an Apple Lisa computer program which shipped with the Macintosh XL. It allows 64K Apple Macintosh ROM emulation so the Macintosh XL can run classic Mac OS programs. History Soon after the debut of the Macintosh Mac is a ...

for the Apple Lisa series; those were introduced between 1977 and 1983. The original operating system for the Macintosh was the

classic Mac OS Mac OS (originally System Software; retronym: Classic Mac OS) is the series of operating systems developed for the Mac (computer), Macintosh family of personal computers by Apple Computer, Inc. from 1984 to 2001, starting with System 1 and end ...

, 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 Mac OS X Server 1.0 is an operating system developed by Apple, Inc. released on March 16, 1999. It was the first version of Mac OS X Server. It was Apple's first commercial product to be derived from " Rhapsody"—an eventual replacement for t ...

was released, followed by

Mac OS X 10.0 Mac OS X 10.0 (code named Cheetah) is the first major release of macOS, Apple's desktop and server operating system. It was released on March 24, 2001, for a price of $129 after a public beta. Mac OS X was Apple's successor to the classic Ma ...

, 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 Apple DOS is the disk operating system for the Apple II computers from late 1978 through early 1983. It was superseded by ProDOS in 1983. Apple DOS has three major releases: DOS 3.1, DOS 3.2, and DOS 3.3; each one of these three releases was foll ...

is the first operating system for Apple computers. *

Apple ProDOS ProDOS is the name of two similar operating systems for the Apple II of personal computer. The original ProDOS, renamed ProDOS 8 in version 1.2, is the last official operating system usable by all 8-bit Apple II computers, and was distributed ...

Apple GS/OS GS/OS is an operating system developed by Apple Computer for its Apple IIGS personal computer. It provides facilities for accessing the file system, controlling input/output devices, loading and running program files, and a system allowing pro ...

Apple III

Apple Lisa

Lisa OS Lisa is a desktop computer developed by Apple Inc., Apple, produced from January 19, 1983, to August 1, 1986, and succeeded by Mac (computer), Macintosh. It is generally considered the first mass-market personal computer operable through a graph ...

Mac

Classic Mac OS

System 1 The Macintosh "System 1" is the first major release of the classic Mac OS operating system. It was developed for the Motorola 68000 microprocessor. System 1 was released on January 24, 1984, along with the Macintosh 128K, the first in the Maci ...

* System 2 *

System 3 System 3, System/3 or System III may refer to: Computing and electronics *Acorn System 3, a home computer produced by Acorn Computers from 1980 *Cromemco System Three, a home computer produced by Cromemco from 1978 *IBM System/3, a low-end business ...

* System 4 * System Software 5 – also marketed as System 5 *

System Software 6 System 6 (or System Software 6) is the sixth major release of the classic Mac OS operating system for Macintosh computers, made by Apple Computer. It was released in 1988. It is a monolithic operating system, with cooperative multitasking based ...

– also marketed as System 6 *

System 7 System 7 (later named Mac OS 7) is the seventh major release of the classic Mac OS operating system for Macintosh computers, made by Apple Computer. It was launched on May 13, 1991, to succeed System 6 with virtual memory, personal file shari ...

– System 7.5.1 was the first to refer to itself as

Mac OS Mac operating systems were developed by Apple Inc. in a succession of two major series. In 1984, Apple debuted the operating system that is now known as the classic Mac OS with its release of the original Macintosh System Software. The system ...

, Mac OS 7.6 was the first to be branded as "Mac OS" *

Mac OS 8 Mac OS 8 is the eighth major release of the classic Mac OS operating system for Macintosh computers, released by Apple Computer on July 26, 1997. It includes the largest overhaul of the classic Mac OS experience since the release of System 7 ...

Mac OS 9 Mac OS 9 is the ninth and final major release of the classic Mac OS operating system for Macintosh computers, made by Apple Computer. Introduced on October 23, 1999, it was promoted by Apple as "The Best Internet Operating System Ever", highlight ...

– Mac OS 9.2.2 was the last version of

Classic Mac OS Mac OS (originally System Software; retronym: Classic Mac OS) is the series of operating systems developed for the Mac (computer), Macintosh family of personal computers by Apple Computer, Inc. from 1984 to 2001, starting with System 1 and end ...

Mac OS X / OS X / macOS

macOS was initially called Mac OS X and later OS X. *

Mac OS X Public Beta Mac OS X Public Beta (internally code named "Kodiak") was the first publicly available version of Apple Inc., Apple Computer's macOS, Mac OS X (now named macOS) operating system to feature the Aqua (user interface), Aqua user interface. It was ...

– code name ''Kodiak'' *

– code name ''Cheetah'' * Mac OS X 10.1 – code name ''Puma'' * Mac OS X 10.2 – also marketed as ''Jaguar'' *

Mac OS X Panther Mac OS X Panther (version 10.3) is the fourth major release of macOS, Apple's desktop and server operating system. It followed Mac OS X Jaguar and preceded Mac OS X Tiger. It was released on October 24, 2003, with the retail price of US$12 ...

– 10.3 *

Mac OS X Tiger Mac OS X Tiger (version 10.4) is the 5th major release of macOS, Apple's desktop and server operating system for Mac computers. Tiger was released to the public on April 29, 2005, for US$129.95 as the successor to Mac OS X 10.3 Panther. Inc ...

– 10.4 *

Mac OS X Leopard Mac OS X Leopard (version 10.5) is the sixth software versioning, major release of macOS, Apple Inc., Apple's desktop and server operating system for Macintosh computers. Leopard was released on October 26, 2007, as the successor of Mac OS X Ti ...

– 10.5 *

Mac OS X Snow Leopard Mac OS X Snow Leopard (version 10.6) (also referred to as OS X Snow Leopard) is the seventh major release of macOS, Apple's desktop and server operating system for Macintosh computers. Snow Leopard was publicly unveiled on June 8, 2009, at A ...

– 10.6 *

Mac OS X Lion OS X Lion, also known as Mac OS X Lion, (version 10.7) is the eighth major release of macOS, Apple's desktop and server operating system for Mac computers. A preview of OS X 10.7 Lion was publicly shown at the "Back to the Mac" Apple Speci ...

– 10.7 – also marketed as ''OS X Lion'' *

OS X Mountain Lion OS X Mountain Lion (version 10.8) is the ninth major release of macOS, Apple Inc.'s desktop and server operating system for Macintosh computers. OS X Mountain Lion was released on July 25, 2012, for purchase and download through the Mac App S ...

– 10.8 *

OS X Mavericks OS X Mavericks (version 10.9) is the 10th major release of macOS, Apple Inc.'s desktop and server operating system for Macintosh computers. OS X Mavericks was announced on June 10, 2013, at WWDC 2013, and was released on October 22, 2013, wo ...

– 10.9 (free) *

OS X Yosemite OS X Yosemite ( ; version 10.10) is the eleventh major release of macOS, Apple Inc.'s desktop and server operating system for Macintosh computers. OS X Yosemite was announced and released to developers on June 2, 2014, at WWDC 2014 and re ...

– 10.10 (free) *

OS X El Capitan OS X El Capitan ( ) () is the twelfth major release of macOS (named OS X at the time of El Capitan's release), Apple Inc.'s desktop and server operating system for Macintosh. It focuses mainly on performance, stability, and security. Followi ...

– 10.11 (free) *

macOS Sierra macOS Sierra (version 10.12) is the thirteenth major release of macOS (formerly known as and ), Apple Inc.'s desktop and server operating system for Macintosh computers. The name "macOS" stems from the intention to unify the operating syst ...

– 10.12 (free) *

macOS High Sierra macOS High Sierra (version 10.13) is the fourteenth major release of macOS, Apple Inc.'s desktop operating system for Macintosh computers. macOS High Sierra was announced at the WWDC 2017 on June 5, 2017 and was released on September 25, 201 ...

– 10.13 (free) *

macOS Mojave macOS Mojave ( ; version 10.14) is the fifteenth major release of macOS, Apple Inc.'s desktop operating system for Macintosh computers. Mojave was announced at Apple's Worldwide Developers Conference on June 4, 2018, and was released to the ...

– 10.14 (free) *

macOS Catalina macOS Catalina (version 10.15) is the sixteenth software versioning, major release of macOS, Apple Inc.'s desktop operating system for Macintosh computers. It is the successor to macOS Mojave and was announced at WWDC 2019 on June 3, 2019 and ...

– 10.15 (free) *

macOS Big Sur macOS Big Sur (version 11) is the seventeenth software versioning, major release of macOS, Apple Inc., Apple's operating system for Macintosh computers. It was announced at Apple's Worldwide Developers Conference (WWDC) on June 22, 2020, and w ...

– 11 (free) *

macOS Monterey macOS Monterey (version 12) is the eighteenth major release of macOS, Apple's desktop operating system for Macintosh computers. The successor to macOS Big Sur, it was announced at WWDC 2021 on June 7, 2021, and released on October 25, 2021. ...

– 12 (free) *

macOS Ventura macOS Ventura (version 13) is the nineteenth major release of macOS, Apple's operating system for Macintosh computers. The successor to macOS Monterey, it was announced at WWDC 2022 on June 6, 2022, and launched on October 24, 2022. macOS V ...

– 13 (free) *

macOS Sonoma macOS Sonoma (version 14) is the twentieth Software versioning, major release of macOS, Apple Inc., Apple's operating system for Mac (computer), Mac computers. The successor to macOS Ventura, it was announced at WWDC 2023 on June 5, 2023, and ...

– 14 (free) *

macOS Sequoia macOS Sequoia (version 15) is the twenty-first and current major release of Apple Inc., Apple's macOS operating system, the successor to macOS Sonoma. It was announced at Worldwide Developers Conference#2024, WWDC 2024 on June 10, 2024. In li ...

– 15 (free) *

macOS Tahoe macOS Tahoe (version 26) is the upcoming twenty-second major release of Apple's macOS operating system. The successor to macOS Sequoia (macOS 15), it was first announced at WWDC 2025 on June 9, 2025, with its first developer beta released the ...

– 26 (free)

macOS Server

macOS Server was initially called Mac OS X Server and later OS X Server. *

– 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 Mac OS X Server is a series of Discontinued software, discontinued Unix-like server operating systems developed by Apple Inc., based on macOS. It provided server functionality and system administration tools, and tools to manage both macOS ...

– 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 The Mac App Store (also known as the App Store) is a digital distribution platform for macOS apps, often referred to as Mac apps, created and maintained by Apple. The platform was announced on October 20, 2010, at Apple's "Back to the Mac" eve ...

. * 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 Mac OS X Server is a series of Discontinued software, discontinued Unix-like server operating systems developed by Apple Inc., based on macOS. It provided server functionality and system administration tools, and tools to manage both macOS ...

– 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 bridgeOS is an embedded operating system created and developed by Apple Inc. for use exclusively with its hardware. bridgeOS runs on the T series Apple silicon processors and operates devices such as the OLED touchscreen A touchscreen ( ...

– powers the

Touch Bar The MacBook Pro is a line of Mac laptop computers developed and manufactured by Apple. Introduced in 2006, it is the high-end sibling of the MacBook family, sitting above the ultra-portable MacBook Air and previously the low-end MacBook li ...

and other internal components *

NeXTSTEP NeXTSTEP is a discontinued object-oriented, multitasking operating system based on the Mach kernel and the UNIX-derived BSD. It was developed by NeXT, founded by Steve Jobs, in the late 1980s and early 1990s and was initially used for its ...

OPENSTEP OpenStep is an object-oriented application programming interface (API) specification developed by NeXT. It provides a framework for building graphical user interfaces (GUIs) and developing software applications. OpenStep was designed to be plat ...

* Darwin

Others

* A/ROSE *

A/UX A/UX is a Unix-based operating system from Apple Computer for Macintosh computers, integrated with System 7's graphical interface and application compatibility. It is Apple's first official Unix-based operating system, launched in 1988 and disc ...

* AIX for Apple Network Servers *

Macintosh Application Environment The Macintosh Application Environment (MAE) is a software package introduced by Apple Computer in 1994 that allows certain Unix-based computer workstations to run System 7 and its application software. Overview MAE uses the X Window System to pro ...

MkLinux MkLinux (for Microkernel Linux) was an open-source software computer operating system begun by the Open Software Foundation Research Institute and Apple Computer in February 1996, to port Linux to the PowerPC platform, and Macintosh computers. Th ...

PowerOpen Environment The PowerOpen Environment (POE), created in 1991 from the AIM alliance, is an open standard for running a Unix-based operating system on the PowerPC computer architecture. History The AIM alliance was announced on October 2, 1991, yielding the h ...

Star Trek ''Star Trek'' is an American science fiction media franchise created by Gene Roddenberry, which began with the Star Trek: The Original Series, series of the same name and became a worldwide Popular culture, pop-culture Cultural influence of ...

– unreleased *

Taligent Taligent Inc. (a portmanteau of "talent" and "intelligent") was an American software company. Based on the Pink object-oriented operating system conceived by Apple in 1988, Taligent Inc. was incorporated as an Apple/IBM partnership in 1992, and ...

– unreleased *

Copland Copland may refer to: * Copland (crater), on Mercury * Copland (operating system) * Copland (surname) * Copland River in New Zealand * 4532 Copland, an asteroid named after Aaron Copland * Aaron Copland, American composer See also * Copeland (dis ...

– unreleased

Mobile devices

Newton

Newton OS ''Newton OS'' is a discontinued operating system for the Apple Newton PDAs produced by Apple Computer, Inc. between 1993 and 1997. It was written entirely in C++ and trimmed to be low power consuming and use the available memory efficiently. Ma ...

iPod

* iPod OS

iOS

iOS was previously known as

iPhone The iPhone is a line of smartphones developed and marketed by Apple that run iOS, the company's own mobile operating system. The first-generation iPhone was announced by then–Apple CEO and co-founder Steve Jobs on January 9, 2007, at ...

OS, despite also being available on the

iPod Touch The iPod Touch (stylized as iPod touch) is a discontinued line of iOS-based mobile devices designed and formerly marketed by Apple Inc. with a touchscreen-controlled user interface. As with other iPod models, the iPod Touch can be used as a po ...

(

1st First most commonly refers to: * First, the ordinal form of the number 1 First or 1st may also refer to: Acronyms * Faint Images of the Radio Sky at Twenty-Centimeters, an astronomical survey carried out by the Very Large Array * Far Infrared a ...

2nd A second is the base unit of time in the International System of Units (SI). Second, Seconds, The Second, or (The) 2nd may also refer to: Mathematics * 2 (number), as an ordinal (also written as ''2nd'' or ''2d'') * Minute and second of arc, ...

, and 3rd

generations A generation is all of the people born and living at about the same time, regarded collectively. Generation or generations may also refer to: Science and technology * Generation (particle physics), a division of the elementary particles * Genera ...

) and the

original Originality is the aspect of created or invented works that distinguish them from reproductions, clones, forgeries, or substantially derivative works. The modern idea of originality is according to some scholars tied to Romanticism, by a notion t ...

iPad The iPad is a brand of tablet computers developed and marketed by Apple Inc., Apple that run the company's mobile operating systems iOS and later iPadOS. The IPad (1st generation), first-generation iPad was introduced on January 27, 2010. ...

. *

iPhone OS 1 iPhone OS 1 is the first major release of iOS, Apple's mobile operating system. It was released on June 29, 2007 alongside with the first-generation iPhone. It was succeeded by iPhone OS 2 on July 11, 2008. History Development history Develop ...

– derived from "Mac OS X" (now known as "

") *

iPhone OS 2 iPhone OS 2 is the second major release of the iOS mobile operating system developed by Apple Inc., being the successor to iPhone OS 1. It was the first version of iOS to support third-party applications via the App Store. iPhone OS 2.2.1 is ...

iPhone OS 3 iPhone OS 3 (''stylized as iPhone OS 3.0'') is the third major release of the iOS mobile operating system developed by Apple Inc., succeeding iPhone OS 2. It was announced on March 17, 2009, and was released on June 17, 2009. It was succeeded ...

iOS 4 iOS 4 is the fourth major release of the iOS mobile operating system developed by Apple Inc., being the successor to iPhone OS 3. It was announced at the Apple Special Event on April 8, 2010, and released on June 21, 2010. iOS 4 was the first ...

– continued from iPhone OS 3 *

iOS 5 iOS 5 is the iOS version history, fifth major release of the iOS mobile operating system developed by Apple Inc., being the successor to iOS 4. It was announced at the company's Worldwide Developers Conference on June 6, 2011, and was released ...

iOS 6 iOS 6 is the sixth major release of the iOS mobile operating system developed by Apple Inc, being the successor to iOS 5. It was announced at the company's Worldwide Developers Conference on June 11, 2012, and was released on September 19, 2012 ...

iOS 7 iOS 7 is the seventh major release of the iOS mobile operating system developed by Apple Inc., being the successor to iOS 6. It was announced at the company's Worldwide Developers Conference on June 10, 2013, and was released on September 18 ...

iOS 8 iOS 8 is the eighth major release of the iOS mobile operating system developed by Apple Inc., being the successor to iOS 7. It was announced at the company's Worldwide Developers Conference on June 2, 2014, and was released on September 17 ...

iOS 9 iOS 9 is the ninth major release of the iOS mobile operating system developed by Apple Inc., being the successor to iOS 8. It was announced at the company's Worldwide Developers Conference on June 8, 2015, and was released on September 16, ...

iOS 10 iOS 10 is the iOS version history, tenth major release of the iOS mobile operating system developed by Apple Inc., being the successor to iOS 9. It was announced at the company's Worldwide Developers Conference on June 13, 2016, and was release ...

iOS 11 iOS 11 is the iOS version history, eleventh major release of the iOS mobile operating system developed by Apple Inc., Apple, being the successor to iOS 10. It was announced at the company's Worldwide Developers Conference on June 5, 2017, and w ...

iOS 12 iOS 12 is the iOS version history, twelfth major release of the iOS mobile operating system developed by Apple Inc., Apple. Aesthetically similar to its predecessor, iOS 11, it focuses more on performance than on new features, quality improvemen ...

iOS 13 iOS 13 is the thirteenth major release of the iOS mobile operating system developed by Apple for the iPhone, iPod Touch and HomePod. The successor to iOS 12, it was announced at the company's Worldwide Developers Conference (WWDC) on June ...

iOS 14 iOS 14 is the fourteenth major release of the iOS mobile operating system developed by Apple for the iPhone and iPod touch lines. Announced at the company's Worldwide Developers Conference on June 22, 2020 as the successor to iOS 13, it was rel ...

iOS 15 iOS 15 is the fifteenth major release of the iOS mobile operating system developed by Apple for its iPhone and iPod Touch lines of products. It was announced at the company's Worldwide Developers Conference on June 7, 2021, as the successor to i ...

iOS 16 iOS 16 is the iOS version history, sixteenth major release of Apple Inc., Apple's iOS mobile operating system for the iPhone. It is the successor of iOS 15, and was announced at the company's Worldwide Developers Conference (WWDC) on June 6, 202 ...

iOS 17 iOS 17 is the seventeenth major release of Apple's iOS operating system for the iPhone. It is the direct successor to iOS 16. It was announced on June 5, 2023, at Apple's annual Worldwide Developers Conference alongside watchOS 10, iPadOS 1 ...

iOS 18 iOS 18 is the eighteenth and current major release of Apple's iOS operating system for the iPhone. It was announced on June 10, 2024, at the 2024 Worldwide Developers Conference (WWDC). It was made publicly available on September 16, 2024, as ...

iOS 26 iOS 26 is the nineteenth and the next major release of Apple's iOS operating system for the iPhone. It was announced on June 9, 2025, at Apple's Worldwide Developers Conference (WWDC), and is expected to be released in September. It is the di ...

iPadOS

At its June 2019 Worldwide Developer Conference, Apple introduced iPadOS, a version of iOS, for

tablets, promised for fall 2019 release. *

iPadOS 13 iPadOS 13 is the first major release of the iPadOS mobile operating system developed by Apple Inc. for their iPad line of tablet computers. The successor to iOS 12 on those devices, it was announced at the company's 2019 Worldwide Developers C ...

– derived from iOS 13 *

iPadOS 14 iPadOS 14 is the second major release of the iPadOS operating system developed by Apple for their iPad line of tablet computers. It was announced on June 22, 2020 at the company's Worldwide Developers Conference (WWDC) as the successor to ...

– derived from iOS 14 *

iPadOS 15 iPadOS 15 is the third major release of the iPadOS operating system developed by Apple for its iPad line of tablet computers. The successor to iPadOS 14, it was announced at the company's Worldwide Developers Conference (WWDC) on June 7, 2021 alo ...

– derived from iOS 15 *

iPadOS 16 iPadOS 16 is the fourth major release of the iPadOS operating system developed by Apple for its iPad line of tablet computers. The successor to iPadOS 15, it was announced at the company's Worldwide Developers Conference (WWDC) on June 6, 202 ...

- derived from iOS 16 *

iPadOS 17 iPadOS 17 is the fifth major release of the iPadOS operating system developed by Apple for its iPad line of tablet computers. The successor to iPadOS 16, it was announced at the company's Worldwide Developers Conference (WWDC) on June 5, 2023 ...

- derived from iOS 17 *

iPadOS 18 iPadOS 18 is the sixth and current major release of Apple's iPadOS operating system for the iPad. It was revealed at the 2024 Worldwide Developers Conference (WWDC). It is the direct successor to iPadOS 17 and was announced alongside iOS 18 ...

- derived from iOS 18 *

iPadOS 26 iPadOS 26 is the seventh and the next major release of Apple's iPadOS operating system for the iPad. It was announced in June 2025 at the 2025 Worldwide Developers Conference (WWDC) and is expected to be released in September. It is the direct ...

- derived from iOS 26

watchOS

* watchOS 1 – derived from iOS 8 * watchOS 2 – derived from iOS 9 * watchOS 3 – derived from iOS 10 *

watchOS 4 watchOS is the operating system of the Apple Watch, developed by Apple. It is based on iOS, the operating system used by the iPhone, and has many similar features. It was released on April 24, 2015, along with the Apple Watch, the only device t ...

– derived from iOS 11 * watchOS 5 – derived from iOS 12 * watchOS 6 – derived from iOS 13 * watchOS 7 – derived from iOS 14 *

watchOS 8 watchOS is the operating system of the Apple Watch, developed by Apple. It is based on iOS, the operating system used by the iPhone, and has many similar features. It was released on April 24, 2015, along with the Apple Watch, the only device t ...

– derived from iOS 15 * watchOS 9 – derived from iOS 16 *

watchOS 10 watchOS is the operating system of the Apple Watch, developed by Apple. It is based on iOS, the operating system used by the iPhone, and has many similar features. It was released on April 24, 2015, along with the Apple Watch, the only device t ...

– derived from iOS 17 *

watchOS 11 watchOS is the operating system of the Apple Watch, developed by Apple. It is based on iOS, the operating system used by the iPhone, and has many similar features. It was released on April 24, 2015, along with the Apple Watch, the only device t ...

– derived from iOS 18 *

watchOS 26 watchOS is the operating system of the Apple Watch, developed by Apple. It is based on iOS, the operating system used by the iPhone, and has many similar features. It was released on April 24, 2015, along with the Apple Watch, the only device t ...

– derived from iOS 26

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 9 – derived from iOS 9 * tvOS 10 – derived from iOS 10 *

tvOS 11 tvOS (formerly Apple TV Software) is an operating system developed by Apple for the Apple TV, a digital media player. In the first-generation Apple TV, Apple TV Software was based on Mac OS X. The software for the second-generation and later ...

– derived from iOS 11 *

tvOS 12 tvOS (formerly Apple TV Software) is an operating system developed by Apple for the Apple TV, a digital media player. In the first-generation Apple TV, Apple TV Software was based on Mac OS X. The software for the second-generation and later Ap ...

– derived from iOS 12 * tvOS 13 - derived from iOS 13 * tvOS 14 - derived from iOS 14 *

tvOS 15 tvOS (formerly Apple TV Software) is an operating system developed by Apple for the Apple TV, a digital media player. In the first-generation Apple TV, Apple TV Software was based on Mac OS X. The software for the second-generation and later Ap ...

- derived from iOS 15 *

tvOS 16 tvOS (formerly Apple TV Software) is an operating system developed by Apple Inc., Apple for the Apple TV, a digital media player. In the first-generation Apple TV, Apple TV Software was based on Mac OS X. The software for the second-generation ...

- derived from iOS 16 *

tvOS 17 tvOS (formerly Apple TV Software) is an operating system developed by Apple for the Apple TV, a digital media player. In the first-generation Apple TV, Apple TV Software was based on Mac OS X. The software for the second-generation and later A ...

- derived from iOS 17 *

tvOS 18 tvOS (formerly Apple TV Software) is an operating system developed by Apple for the Apple TV, a digital media player. In the first-generation Apple TV, Apple TV Software was based on Mac OS X. The software for the second-generation and later Ap ...

- derived from iOS 18 *

tvOS 26 tvOS (formerly Apple TV Software) is an operating system developed by Apple for the Apple TV, a digital media player. In the first-generation Apple TV, Apple TV Software was based on Mac OS X. The software for the second-generation and later Ap ...

- derived from iOS 26

audioOS

visionOS

visionOS 1 visionOS is a mixed reality operating system derived primarily from iPadOS and its core frameworks (including UIKit, SwiftUI, ARKit and RealityKit), and MR-specific frameworks for foveated rendering and real-time interaction. It was developed b ...

- derived from iOS 17 *

visionOS 2 visionOS is a mixed reality operating system derived primarily from iPadOS and its core frameworks (including UIKit, SwiftUI, ARKit and RealityKit), and MR-specific frameworks for foveated rendering and real-time interaction. It was developed b ...

- derived from iOS 18 *

visionOS 26 visionOS is a mixed reality operating system derived primarily from iPadOS and its core frameworks (including UIKit, SwiftUI, ARKit and RealityKit), and MR-specific frameworks for foveated rendering and real-time interaction. It was developed b ...

- derived from iOS 26

Table of operating systems

Notes

References

{{Darwin derivations

operating systems An operating system (OS) is system software that manages computer hardware and software resources, and provides common daemon (computing), services for computer programs. Time-sharing operating systems scheduler (computing), schedule tasks for ...

Apple An apple is a round, edible fruit produced by an apple tree (''Malus'' spp.). Fruit trees of the orchard or domestic apple (''Malus domestica''), the most widely grown in the genus, are agriculture, cultivated worldwide. The tree originated ...