|A version of the macOS operating system|
|Source model||Closed, with open source components|
|October 7, 2019|
|Latest release||10.15.7 Security Update 2021-008 (19H1615) (December 13, 2021 )|
|Update method||Software Update|
|Kernel type||Hybrid (XNU)|
|License||APSL and Apple EULA|
|Preceded by||macOS Mojave|
|Succeeded by||macOS Big Sur|
|Official website||www.apple.com/macos/catalina at the Wayback Machine (archived November 9, 2020)|
|Part of a series on|
macOS Catalina (version 10.15) is the sixteenth 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 released to the public on October 7, 2019. Catalina is the first version of macOS to support only 64-bit 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, released on November 12, 2020, is version 11.
macOS Catalina officially runs on all standard configuration Macs that supported Mojave. 2010–2012 Mac Pros, which could run Mojave only with a GPU upgrade, are no longer supported. Catalina requires 4 GB of memory, an increase over the 2 GB required by Lion through Mojave.
- iMac: Late 2012 or newer
- iMac Pro: Late 2017
- Mac Pro: Late 2013 or newer
- Mac Mini: Late 2012 or newer
- MacBook: Early 2015 or newer
- MacBook Air: Mid 2012 or newer
- MacBook Pro: Mid 2012 or newer, Retina display not needed
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.
- AirPort Utility
- App Store
- Archive Utility
- Audio MIDI Setup
- Bluetooth File Exchange
- Boot Camp Assistant
- ColorSync Utility
- Digital Color Meter
- Disk Utility
- DVD Player
- Find My
- Font Book
- GarageBand (may not be pre-installed)
- iMovie (may not be pre-installed)
- Image Capture
- Keychain Access
- Keynote (may not be pre-installed)
- Migration Assistant
- News (only available for Australia, Canada, United Kingdom, and United States)
- Numbers (may not be pre-installed)
- Pages (may not be pre-installed)
- Photo Booth
- QuickTime Player
- Screenshot (succeeded Grab since Mojave)
- Script Editor
- System Information
- Time Machine
- Voice Memos
- VoiceOver Utility
- X11/XQuartz (may not be pre-installed)
Catalyst is a new software-development tool that allows developers to write apps that can run on macOS, iOS and iPadOS. Apple demonstrated several ported apps, including Jira and Twitter (after the latter discontinued its macOS app in February 2018).
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.
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.
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 helps prevent the unauthorized use and drive erasure of devices with an Apple T2 security chip (2018, 2019, and 2020 MacBook Pro; 2020 5K iMac; 2018 MacBook Air, iMac Pro; 2018 Mac Mini; 2019 Mac Pro).
Dedicated system volume
The system runs on its own read-only volume, separate from all other data on the Mac.
Sidecar allows a Mac to use an iPad (running iPadOS) as a wireless external display. With Apple Pencil, the device can also be used as a graphics tablet 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
A number of under-the-hood changes were made to Time Machine, 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.
iTunes is replaced by separate Music, Podcasts, TV and Books apps, in line with iOS. iOS device management is now conducted via Finder. The TV app on Mac supports Dolby Atmos, Dolby Vision, and HDR10 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.
iTunes can still be installed and will work separately from the new apps (according to support information on Apple’s website).
The Notes 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.
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.
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.
Zsh is the default login shell and interactive shell in macOS Catalina, replacing Bash, the default shell since Mac OS X Panther in 2003. Bash continues to be available in macOS Catalina, along with other shells such as csh/tcsh and ksh.
The ability to add Backgrounds in Photo Booth was removed in macOS Catalina.
The command-line interface GNU Emacs application was removed in macOS Catalina.
Built-in support for Perl, Python 2.7 and Ruby 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.
Catalina received favourable 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 dialog boxes with Windows Vista a decade earlier) was criticised as intrusive and annoying.
|Previous release||Current release|
|Version||Build||Date||Darwin||Release Notes||Standalone download|
|10.15||19A583||October 7, 2019||19.0.0||Original Software Update release|
|19A602||October 15, 2019||Supplemental update|
|19A603||October 21, 2019||Revised Supplemental update|
|10.15.1||19B88||October 29, 2019||19.0.0
|About the macOS Catalina 10.15.1 Update||macOS 10.15.1 Update|
|10.15.2||19C57 & 19C58||December 10, 2019||19.2.0
|About the macOS Catalina 10.15.2 Update||macOS 10.15.2 Update|
|10.15.3||19D76||January 28, 2020||19.3.0
|About the macOS Catalina 10.15.3 Update||macOS 10.15.3 Update|
|10.15.4||19E266||March 24, 2020||19.4.0
|About the macOS Catalina 10.15.4 Update||macOS 10.15.4 Update|
|19E287||April 8, 2020||Supplemental update||macOS 10.15.4 Supplemental Update|
|10.15.5||19F96||May 26, 2020||19.5.0
|About the macOS Catalina 10.15.5 Update||macOS 10.15.5 Update|
|19F101||June 1, 2020||19.5.0
|Supplemental update||macOS 10.15.5 Supplemental Update|
|10.15.6||19G73||July 15, 2020||19.6.0
Jul 5 00:43:10 PDT 2020
|About the macOS Catalina 10.15.6 Update||macOS 10.15.6 Update|
|19G2021||August 12, 2020||19.6.0
Jun 18 20:49:00 PDT 2020
|Supplemental update||macOS 10.15.6 Supplemental Update|
|10.15.7||19H2||September 24, 2020||19.6.0
Mon Aug 31 22:12:52 PDT 2020
|About the macOS Catalina 10.15.7 Update||macOS 10.15.7 Update|
|19H4||October 27, 2020|
|19H15||November 5, 2020||19.6.0
Thu Oct 29 22:56:45 PDT 2020
|Supplemental update||macOS 10.15.7 Supplemental Update|
|19H114||December 14, 2020||19.6.0
Tue Nov 10 00:10:30 PST 2020
|About the security content of Security Update 2020-001||Security Update 2020-001 (Catalina)|
|19H512||February 1, 2021||19.6.0
Tue Jan 12 22:13:05 PST 2021
|About the security content of Security Update 2021-001||Security Update 2021-001 (Catalina)|
|19H524||February 9, 2021||Supplemental Update||macOS Catalina 10.15.7 Supplemental Update 2|
|19H1030||April 26, 2021||19.6.0
Mon Apr 12 20:57:45 PDT 2021
|About the security content of Security Update 2021-002||Security Update 2021-002 (Catalina)|
|19H1217||May 24, 2021||19.6.0
Thu May 6 00:48:39 PDT 2021
|About the security content of Security Update 2021-003||Security Update 2021-003 (Catalina)|
|19H1323||July 21, 2021||19.6.0
Thu Jun 22 19:49:55 PDT 2021
|About the security content of Security Update 2021-004||Security Update 2021-004 (Catalina)|
|19H1417||September 13, 2021||19.6.0
Tue Aug 24 20:28:00 PDT 2021
|About the security content of Security Update 2021-005||Security Update 2021-005 (Catalina)|
|19H1419||September 23, 2021||19.6.0
Thu Sep 16 20:58:47 PDT 2021
|About the security content of Security Update 2021-006||Security Update 2021-006 (Catalina)|
|19H1519||October 25, 2021||19.6.0
Tue Oct 12 18:34:05 PDT 2021
|About the security content of Security Update 2021-007||Security Update 2021-007 (Catalina)|
|19H1615||December 13, 2021||19.6.0
Sun Nov 14 19:58:51 PST 2021
|About the security content of Security Update 2021-008||Security Update 2021-008 (Catalina)|
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