macOS Catalina (version 10.15) is the sixteenth

major release Major (commandant in certain jurisdictions) is a military rank of commissioned officer status, with corresponding ranks existing in many military forces throughout the world. When used unhyphenated and in conjunction with no other indicators ...

macOS macOS (; previously OS X and originally Mac OS X) is a Unix operating system developed and marketed by Apple Inc. since 2001. It is the primary operating system for Apple's Mac computers. Within the market of desktop and lapt ...

Apple Inc. Apple Inc. is an American multinational technology company headquartered in Cupertino, California, United States. Apple is the largest technology company by revenue (totaling in 2021) and, as of June 2022, is the world's biggest company b ...

's desktop operating system for

Macintosh The Mac (known as Macintosh until 1999) is a family of personal computers designed and marketed by Apple Inc., Apple Inc. Macs are known for their ease of use and minimalist designs, and are popular among students, creative professionals, and ...

computers. It is the successor to

macOS Mojave macOS Mojave ( ; version 10.14) is the fifteenth software versioning, major release of macOS, Apple Inc.'s desktop operating system for Macintosh computers. Mojave was announced at Apple's Apple Worldwide Developers Conference, Worldwide Devel ...

and was announced at

WWDC The Worldwide Developers Conference (WWDC) is an information technology conference held annually by Apple Inc. The conference is usually held at Apple Park in California. The event is usually used to showcase new software and technologies in t ...

2019 on June 3, 2019 and released to the public on October 7, 2019. Catalina is the first version of macOS to support only

64-bit In computer architecture, 64-bit Integer (computer science), integers, memory addresses, or other Data (computing), data units are those that are 64 bits wide. Also, 64-bit central processing unit, CPUs and arithmetic logic unit, ALUs are those ...

applications and the first to include Activation Lock. It is also the last version of macOS to have the major version number of 10; its successor,

Big Sur Big Sur () is a rugged and mountainous section of the Central Coast of California between Carmel and San Simeon, where the Santa Lucia Mountains rise abruptly from the Pacific Ocean. It is frequently praised for its dramatic scenery. Big Sur ha ...

, released on November 12, 2020, is version 11. In order to increase web compatibility,

Safari A safari (; ) is an overland journey to observe wild animals, especially in eastern or southern Africa. The so-called "Big Five" game animals of Africa – lion, leopard, rhinoceros, elephant, and Cape buffalo – particularly form an importa ...

Chromium Chromium is a chemical element with the symbol Cr and atomic number 24. It is the first element in group 6. It is a steely-grey, lustrous, hard, and brittle transition metal. Chromium metal is valued for its high corrosion resistance and hardne ...

and

Firefox Mozilla Firefox, or simply Firefox, is a free and open-source web browser developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation. It uses the Gecko rendering engine to display web pages, which implements current and ...

have frozen the OS in the user agent running in subsequent releases of macOS at 10.15.7 Catalina. The operating system is named after Santa Catalina Island, which is located off the coast of

southern California Southern California (commonly shortened to SoCal) is a geographic and Cultural area, cultural region that generally comprises the southern portion of the U.S. state of California. It includes the Los Angeles metropolitan area, the second most po ...

System requirements

macOS Catalina officially runs on all standard configuration Macs that supported Mojave. 2010–2012

Mac Pro Mac Pro is a series of workstations and servers for professionals that are designed, developed and marketed by Apple Inc. since 2006. The Mac Pro, by some performance benchmarks, is the most powerful computer that Apple offers. It is one of f ...

s, which could run Mojave only with a

GPU A graphics processing unit (GPU) is a specialized electronic circuit designed to manipulate and alter memory to accelerate the creation of images in a frame buffer intended for output to a display device. GPUs are used in embedded systems, mobil ...

upgrade, are no longer supported. Catalina requires 4 GB of memory, an increase over the 2 GB required by

Lion The lion (''Panthera leo'') is a large Felidae, cat of the genus ''Panthera'' native to Africa and India. It has a muscular, broad-chested body; short, rounded head; round ears; and a hairy tuft at the end of its tail. It is sexually dimorphi ...

through Mojave. *

iMac iMac is a family of all-in-one Mac desktop computers designed and built by Apple Inc. It has been the primary part of Apple's consumer desktop offerings since its debut in August 1998, and has evolved through seven distinct forms. In it ...

(Late 2012 or later) *

iMac Pro The iMac Pro is a discontinued all-in-one personal computer and workstation designed, manufactured, and sold by Apple Inc. It was released on December 14, 2017. While it was sold, it was one of four desktop computers in the Macintosh lineup, si ...

* MacBook (Early 2015 or later) *

MacBook Air The MacBook Air is a line of ultrabook computers developed and manufactured by Apple Inc. It consists of a full-size keyboard, a machined aluminum case, and, in the more modern versions, a thin light structure. The Air was originally positioned ...

(Mid 2012 or later) * MacBook Pro (Mid 2012 or later) *

Mac Mini Mac Mini (stylized as Mac mini) is a small form factor (desktop and motherboard), small form factor desktop computer developed and marketed by Apple Inc. , it is positioned between the consumer all-in-one iMac (Intel-based), iMac and the profes ...

(Late 2012 or later) *

(Late 2013 or later) It is possible to install Catalina on many older Macintosh computers that are not officially supported by Apple. This requires using a patch to modify the install image.

Applications

*AirPort Utility *

App Store An App Store (or app marketplace) is a type of digital distribution platform for computer software called applications, often in a mobile context. Apps provide a specific set of functions which, by definition, do not include the running of the co ...

*Archive Utility *Audio MIDI Setup *Automator *Bluetooth File Exchange *

Books A book is a medium for recording information in the form of writing or images, typically composed of many pages (made of papyrus, parchment, vellum, or paper) bound together and protected by a cover. The technical term for this physical ar ...

* Boot Camp Assistant *

Calculator An electronic calculator is typically a portable electronic device used to perform calculations, ranging from basic arithmetic to complex mathematics. The first solid-state electronic calculator was created in the early 1960s. Pocket-sized ...

Calendar A calendar is a system of organizing days. This is done by giving names to periods of time, typically days, weeks, months and years. A date is the designation of a single and specific day within such a system. A calendar is also a physi ...

*Chess *ColorSync Utility *Console *

Contacts Contact lenses, or simply contacts, are thin lenses placed directly on the surface of the eyes. Contact lenses are ocular prosthetic devices used by over 150 million people worldwide, and they can be worn to correct vision or for cosmetic ...

Dictionary A dictionary is a listing of lexemes from the lexicon of one or more specific languages, often arranged alphabetically (or by radical and stroke for ideographic languages), which may include information on definitions, usage, etymologies ...

Digital Color Meter This is a list of macOS built-in apps and system components. Applications App Store The Mac App Store is macOS's digital distribution platform for macOS apps, created and maintained by Apple Inc. based on the iOS version, the platform was an ...

Disk Utility A disk utility is a utility program that allows a user to perform various functions on a computer disk, such as disk partitioning and logical volume management, as well as multiple smaller tasks such as changing drive letters and other mount poi ...

DVD Player A DVD player is a device that plays DVDs produced under both the DVD-Video and DVD-Audio technical standards, two different and incompatible standards. Some DVD players will also play audio CDs. DVD players are connected to a television to wa ...

FaceTime FaceTime is a Proprietary software, proprietary videotelephony product developed by Apple Inc. FaceTime is available on supported iOS mobile devices running iOS 4 and later and Mac computers that run and later. FaceTime supports any iOS devic ...

Find My Find My is an asset tracking app and service provided by Apple Inc. that enables users to track the location of iOS, iPadOS, macOS, watchOS devices, AirPods, AirTags and a number of supported third-party accessories through a connected iCloud acc ...

Font Book Font Book is a font manager by Apple Inc. for its macOS operating system. It was first released with Mac OS X Panther in 2003. Features It is opened by default whenever the user clicks on a new .otf or .ttf font file. The user can view the ...

GarageBand GarageBand is a line of digital audio workstations developed by Apple Inc. for macOS, iPadOS, and iOS devices that allows users to create music or podcasts. GarageBand is developed by Apple for macOS, and was once part of the iLife software s ...

(may not be pre-installed) *

Grapher Grapher is a computer program bundled with macOS since version 10.4 that is able to create 2D and 3D graphs from simple and complex equations. It includes a variety of samples ranging from differential equations to 3D-rendered Toroids and Lo ...

Home A home, or domicile, is a space used as a permanent or semi-permanent residence for one or many humans, and sometimes various companion animals. It is a fully or semi sheltered space and can have both interior and exterior aspects to it. H ...

iMovie iMovie (known at times as iMovie HD) is a preinstalled video editing application developed by Apple Inc. for macOS, iOS, and iPadOS devices. It was originally released in 1999 as a Mac OS 8 application bundled with the first FireWire-enabled ...

(may not be pre-installed) *Image Capture * Keychain Access *

Keynote A keynote in public speaking is a talk that establishes a main underlying theme. In corporate or commercial settings, greater importance is attached to the delivery of a keynote speech or keynote address. The keynote establishes the framework fo ...

(may not be pre-installed) *

Mail The mail or post is a system for physically transporting postcards, letter (message), letters, and parcel (package), parcels. A postal service can be private or public, though many governments place restrictions on private systems. Since the mid ...

* Migration Assistant *

Music Music is generally defined as the art of arranging sound to create some combination of form, harmony, melody, rhythm or otherwise expressive content. Exact definitions of music vary considerably around the world, though it is an aspect ...

News News is information about current events. This may be provided through many different Media (communication), media: word of mouth, printing, Mail, postal systems, broadcasting, Telecommunications, electronic communication, or through the tes ...

(only available for

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and North ...

, and

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

) *

Notes Note, notes, or NOTE may refer to: Music and entertainment * Musical note, a pitched sound (or a symbol for a sound) in music * Notes (album), ''Notes'' (album), a 1987 album by Paul Bley and Paul Motian * ''Notes'', a common (yet unofficial) sho ...

Numbers A number is a mathematical object used to count, measure, and label. The original examples are the natural numbers 1, 2, 3, 4, and so forth. Numbers can be represented in language with number words. More universally, individual numbers can ...

(may not be pre-installed) *

Pages Page most commonly refers to: * Page (paper), one side of a leaf of paper, as in a book Page, PAGE, pages, or paging may also refer to: Roles * Page (assistance occupation), a professional occupation * Page (servant), traditionally a young mal ...

(may not be pre-installed) *

Photo Booth A photo booth is a vending machine or modern kiosk that contains an automated, usually coin-operated, camera and film processor. Today, the vast majority of photo booths are digital. History The patent for the first automated photography ma ...

* Podcasts *

Preview Preview may refer to: Theatre, film, television * Preview (subscription service), an early subscription television service in the United States * Preview (theatre), a public performance of a theatrical show before the official opening * Previe ...

QuickTime Player QuickTime is an extensible multimedia framework developed by Apple Inc., capable of handling various formats of digital video, picture, sound, panoramic images, and interactivity. Created in 1991, the latest Mac version, QuickTime X, is avail ...

* Reminders *Screenshot (succeeded Grab since Mojave) *

Script Editor A script editor is a member of the production team of scripted television and radio programmes, usually dramas and comedies. The script editor has many responsibilities including finding new script writers, developing storyline and series ideas wi ...

* Stickies *Stocks * System Information *

Terminal Terminal may refer to: Computing Hardware * Terminal (electronics), a device for joining electrical circuits together * Terminal (telecommunication), a device communicating over a line * Computer terminal, a set of primary input and output dev ...

TextEdit TextEdit is an open-source word processor and text editor, first featured in NeXT's NeXTSTEP and OPENSTEP. It is now distributed with macOS since Apple Inc.'s acquisition of NeXT, and available as a GNUstep application for other Unix-like oper ...

Time Machine Time travel is the concept of movement between certain points in time, analogous to movement between different points in space by an object or a person, typically with the use of a hypothetical device known as a time machine. Time travel is a w ...

* TV *Voice Memos * VoiceOver Utility * X11/XQuartz (may not be pre-installed)

Changes

System

Catalyst

Catalyst is a new software-development tool that allows developers to write apps that can run on macOS,

iOS iOS (formerly iPhone OS) is a mobile operating system created and developed by Apple Inc. exclusively for its hardware. It is the operating system that powers many of the company's mobile devices, including the iPhone; the term also includes ...

and

iPadOS iPadOS is a mobile operating system developed by Apple Inc. for its iPad line of tablet computers. It is a rebranded variant of iOS, the operating system used by Apple's iPhones, renamed to reflect the diverging features of the two product l ...

. Apple demonstrated several ported apps, including Jira and

Twitter Twitter is an online social media and social networking service owned and operated by American company Twitter, Inc., on which users post and interact with 280-character-long messages known as "tweets". Registered users can post, like, and ...

(after the latter discontinued its macOS app in February 2018).

System extensions

An upgrade from Kexts. System extensions avoid the problems of Kexts. There are 3 kinds of System extensions: Network Extensions, Endpoint Security Extensions, and Driver Extensions. System extensions run in userspace, outside of the kernel. Catalina will be the last version of macOS to support legacy system extensions.

DriverKit

A replacement for IOKit device drivers, driver extensions are built using DriverKit. DriverKit is a new SDK with all-new frameworks based on IOKit, but updated and modernized. It is designed for building device drivers in userspace, outside of the kernel.

Gatekeeper

Mac apps, installer packages, and kernel extensions that are signed with a Developer ID must be notarized by Apple to run on macOS Catalina.

Activation Lock

Activation Lock helps prevent the unauthorized use and drive erasure of devices with an

Apple T2 The Apple T2 (Apple's internal name is T8012) security chip is a system on a chip "SoC" tasked with providing security and controller features to Apple's Intel based Macintosh computers. It is a 64-bit ARMv8 chip and runs bridgeOS. T2 has its ...

security chip (2018, 2019, and 2020 MacBook Pro; 2020 5K

; 2018, 2019, and 2020

; 2018

; 2019

Dedicated system volume

The system runs on its own read-only volume, separate from all other data on the Mac.

Voice control

Users can give detailed voice commands to applications. On-device machine processing is used to offer better navigation.

Sidecar

Sidecar allows a Mac to use an

iPad The iPad is a brand of iOS and iPadOS-based tablet computers that are developed by Apple Inc. The iPad was conceived before the related iPhone but the iPhone was developed and released first. Speculation about the development, operating s ...

(running

) as a wireless external display. With

Apple Pencil Apple Pencil is a line of wireless stylus pen accessories designed and developed by Apple Inc. for use with supported iPad tablets. The first-generation Apple Pencil was announced alongside the first iPad Pro on September 9, 2015. It communic ...

, the device can also be used as a

graphics tablet A graphics tablet (also known as a digitizer, digital graphic tablet, pen tablet, drawing tablet, external drawing pad or digital art board) is a computer input device that enables a user to hand-draw images, animations and graphics, with a spec ...

for software running on the computer. Sidecar requires a Mac with Intel Skylake CPUs and newer (such as the fourth-generation MacBook Pro), and an iPad that supports Apple Pencil.

Support for wireless game controllers

The Game Controller framework adds support for two major console game controllers: the

PlayStation 4 The PlayStation 4 (PS4) is a home video game console developed by Sony Interactive Entertainment. Announced as the successor to the PlayStation 3 in February 2013, it was launched on November 15, 2013, in North America, November 29, 2013 in ...

DualShock 4 The DualShock (originally Dual Shock; trademarked as DUALSHOCK or DUAL SHOCK; with the PlayStation 5 version named DualSense) is a line of gamepads with vibration-feedback and analog controls developed by Sony Interactive Entertainment for the P ...

and the

Xbox One controller The Xbox Wireless Controller is the primary game controller for the Xbox One and Xbox Series X/S home video game consoles, also commercialized for its use in Windows-based PCs, and compatible with other operating systems such as macOS, Linux, i ...

Time Machine

A number of under-the-hood changes were made to

, the backup software. For example, the manner in which backup data is stored on network-attached devices was changed, and this change is not backwards-compatible with earlier versions of macOS. Apple declined to document these changes, but some of them have been noted.

Applications

iTunes

iTunes iTunes () is a software program that acts as a media player, media library, mobile device management utility, and the client app for the iTunes Store. Developed by Apple Inc., it is used to purchase, play, download, and organize digital mul ...

is replaced by separate

, Podcasts, TV and

apps, in line with

iOS device Apple Inc. has developed four Unix-like operating systems, namely iOS, iPadOS, tvOS, and watchOS. Devices using these systems include the iPhone, iPod Touch, and iPad, which are mobile devices; the Apple TV, which is a digital media player; a ...

management is now conducted via Finder. The TV app on Mac supports

Dolby Atmos Dolby Atmos is a surround sound technology developed by Dolby Laboratories. It expands on existing surround sound systems by adding height channels, allowing sounds to be interpreted as three-dimensional objects with neither horizontal, nor verti ...

Dolby Vision Dolby Vision is a set of technologies developed by Dolby Laboratories for high dynamic range (HDR) video. It covers content creation, distribution, and playback. It includes dynamic metadata that are used to adjust and optimize each frame of the ...

, and

HDR10 HDR10 Media Profile, more commonly known as HDR10, is an open high-dynamic-range video (HDR) standard announced on 27 August 2015 by the Consumer Technology Association. It is the most widespread of the HDR formats. HDR10 is not backward compati ...

on MacBooks released in 2018 or later, while 4K HDR playback is supported on Macs released in 2018 or later when connected to a compatible display.

Find My

Find My Mac Find My is an asset tracking app and service provided by Apple Inc. that enables users to track the location of iOS, iPadOS, macOS, watchOS devices, AirPods, AirTags and a number of supported third-party accessories through a connected iCloud acc ...

and

Find My Friends Find My Friends (called "Find Friends" on the SpringBoard) was a mobile phone tracking app and service for iOS devices developed by Apple Inc., Apple Inc. Both Find My iPhone and Find My Friends were combined into the app Find My in iOS 13 and iPa ...

are merged into an application called

Notes

The

application was enhanced to allow better management of checklists and the ability to share folders with other users. The application version was incremented from 4.6 (in macOS 10.14 Mojave) to 4.7.

Reminders

Among other visual and functional overhauls, attachments can be added to reminders and Siri can intelligently estimate when to remind the user about an event.

Voice Memos

The Voice Memos application, first ported from iOS to the Mac in macOS 10.14 Mojave as version 2.0, was incremented to version 2.1.

Removed or changed components

macOS Catalina exclusively supports 64-bit applications. 32-bit applications no longer run (including all software that utilizes the Carbon API as well as QuickTime 7 applications, image, audio and video codecs). Apple has also removed all 32-bit-only apps from the

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

Z shell The Z shell (Zsh) is a Unix shell that can be used as an interactive login shell and as a command interpreter for shell scripting. Zsh is an extended Bourne shell with many improvements, including some features of Bash, ksh, and tcsh. Hist ...

(executable "zsh") is the default login shell and interactive shell in macOS Catalina, replacing

Bash Bash or BASH may refer to: Arts and entertainment * ''Bash!'' (Rockapella album), 1992 * ''Bash!'' (Dave Bailey album), 1961 * '' Bash: Latter-Day Plays'', a dramatic triptych * ''BASH!'' (role-playing game), a 2005 superhero game * "Bash" ('' ...

, the default shell since

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. System requirements Panther's s ...

in 2003. Bash continues to be available in macOS Catalina, along with other shells such as csh/

tcsh tcsh ( “tee-see-shell”, “tee-shell”, or as “tee see ess aitch”, tcsh) is a Unix shell based on and backward compatible with the C shell (csh). Shell It is essentially the C shell with programmable command-line completion, command-l ...

and ksh.

Dashboard For business applications, see Dashboard (business). A dashboard (also called dash, instrument panel (IP), or fascia) is a control panel set within the central console of a vehicle or small aircraft. Usually located directly ahead of the driver ...

has been removed in macOS Catalina. The ability to add Backgrounds in

was removed in macOS Catalina. The command-line interface

GNU Emacs GNU Emacs is a free software text editor. It was created by GNU Project founder Richard Stallman, based on the Emacs editor developed for Unix operating systems. GNU Emacs has been a central component of the GNU project and a flagship project of ...

application was removed in macOS Catalina. Built-in support for

Perl Perl is a family of two high-level, general-purpose, interpreted, dynamic programming languages. "Perl" refers to Perl 5, but from 2000 to 2019 it also referred to its redesigned "sister language", Perl 6, before the latter's name was offici ...

Python Python may refer to: Snakes * Pythonidae, a family of nonvenomous snakes found in Africa, Asia, and Australia ** ''Python'' (genus), a genus of Pythonidae found in Africa and Asia * Python (mythology), a mythical serpent Computing * Python (pro ...

2.7 and

Ruby A ruby is a pinkish red to blood-red colored gemstone, a variety of the mineral corundum ( aluminium oxide). Ruby is one of the most popular traditional jewelry gems and is very durable. Other varieties of gem-quality corundum are called sa ...

are included in macOS for compatibility with legacy software. Future versions of macOS will not include scripting language runtimes by default, possibly requiring users to install additional packages. Legacy

AirDrop An airdrop is a type of airlift in which items including weapons, equipment, humanitarian aid or leaflets are delivered by military or civilian aircraft without their landing. Developed during World War II to resupply otherwise inaccessible tro ...

for connecting with Macs running

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 ...

Mountain Lion The cougar (''Puma concolor'') is a large cat native to the Americas. Its range spans from the Canadian Yukon to the southern Andes in South America and is the most widespread of any large wild terrestrial mammal in the Western Hemisphere. I ...

and

Mavericks Maverick, Maveric or Maverik may refer to: History * Maverick (animal), an unbranded range animal, derived from U.S. cattleman Samuel Maverick Aviation * AEA Maverick, an Australian single-seat sportsplane design * General Aviation Design Bureau ...

, or 2011 and older Macs has been removed.

Reception

Catalina received favorable reviews on release for some of its features. However, some critics found the OS version distinctly less reliable than earlier versions. The broad addition of user-facing security measures (somewhat analogous to the addition of

User Account Control User Account Control (UAC) is a mandatory access control enforcement feature introduced with Microsoft's Windows Vista and Windows Server 2008 operating systems, with a more relaxed

dialog boxes with

Windows Vista Windows Vista is a major release of the Windows NT operating system developed by Microsoft. It was the direct successor to Windows XP, which was released five years before, at the time being the longest time span between successive releases of ...

a decade earlier) was criticized as intrusive and annoying.

Release history

References

External links

* – official site
macOS Catalina
download page at

Apple An apple is an edible fruit produced by an apple tree (''Malus domestica''). Apple fruit tree, trees are agriculture, cultivated worldwide and are the most widely grown species in the genus ''Malus''. The tree originated in Central Asia, wh ...

{{Apple software 2019 software Computer-related introductions in 2019 15 X86-64 operating systems