MacOS Catalina (English Wikipedia)

"SystemExtensions". Apple Developer Documentation.
System Extensions and DriverKit. Apple Developer Documentation.
"DriverKit". Apple Developer Documentation.
"Developer ID: Upcoming Requirements". Apple Developer.
"Supporting New Game Controllers". Apple Developer. Retrieved July 5, 2019.
"macOS 10.15 Beta Release Notes". Apple Developer. Retrieved June 6, 2019. Scripting language runtimes such as Python, Ruby, and Perl are included in macOS for compatibility with legacy software. Future versions of macOS won't include scripting language runtimes by default, and might require you to install additional packages.
"Safari 13 Release Notes". Apple Developer Documentation. Retrieved September 19, 2019.

support.apple.com

"Apple security updates". Apple Support. July 20, 2022. Retrieved July 20, 2022.
"How to upgrade to macOS Catalina". Apple Support. Archived from the original on October 21, 2019.
"How to upgrade to macOS Mojave". Apple Support. Archived from the original on December 19, 2019.
"Use zsh as the default shell on your Mac - Apple Support". Retrieved July 1, 2019.

apple.com

"macOS Catalina". Apple Inc. Archived from the original on November 10, 2020. Retrieved June 3, 2019.
"Apple previews macOS Catalina" (Press release). Apple Inc. June 3, 2019. Retrieved June 4, 2019.
"Voice Control" (PDF). September 2019. Voice Control lets users control the entire device with spoken commands and specialized tools, while Siri is an intelligent assistant that lets users ask for information and complete everyday tasks using natural language. Voice Control offers comprehensive capabilities such as voice gestures, name and number labels, grid overlays, text editing commands, and deep customization, while Siri assists with setting reminders, making appointments, looking up directions, and learning game scores.

discussions.apple.com

"Can not connect my 2 macs with AirDrop". discussions.apple.com.

appleinsider.com

"Apple begins phasing out kernel extensions in macOS 10.15.4". AppleInsider. March 25, 2020.
O'Hara, Andrew. "You can use your iPad as a second display with Sidecar in macOS Catalina". AppleInsider. Retrieved June 3, 2019.

arstechnica.com

Cunningham, Andrew (October 7, 2019). "macOS 10.15 Catalina: The Ars Technica review". Ars Technica. Retrieved October 7, 2019.
Cunningham, Andrew (October 27, 2022). "Apple clarifies security update policy: Only the latest OSes are fully patched". Ars Technica. Archived from the original on February 12, 2023. Retrieved February 12, 2023.
Cunningham, Andrew (November 12, 2021). "PSA: Apple isn't actually patching all the security holes in older versions of macOS". Ars Technica. Archived from the original on January 1, 2023. Retrieved February 12, 2023.
Cunningham, Andrew (October 7, 2019). "macOS 10.15 Catalina: The Ars Technica review: Conclusions". Ars Technica. Retrieved June 23, 2020.

blog.google

"Analyzing a watering hole campaign using macOS exploits". Google. November 11, 2021. Archived from the original on December 19, 2021. Retrieved February 12, 2023.

books.google.com

Landau, Ted; Frakes, Dan (December 20, 2005). Mac OS X Help Line, Tiger Edition. Peachpit Press. ISBN 9780132705240.

chromium.org

bugs.chromium.org

"1175225 - chromium - An open-source project to help move the web forward. - Monorail". bugs.chromium.org. Retrieved February 25, 2022.

cnet.com

Shankland, Stephen (June 7, 2019). "Here are 6 MacOS Catalina security changes coming from Apple this fall". CNET.
"Apple adding support for PS4, Xbox One controllers to iOS, TVOS and MacOS". CNET. Retrieved July 5, 2019.
Conner, Katie (September 10, 2019). "235 Mac apps get the ax with Apple's next update. Here's how you find them on your rig". CNET.

craigmod.com

Mod, Craig. "Brilliant Hardware in the Valley of the Software Slump". Craig Mod. Retrieved June 23, 2020.

daringfireball.net

Gruber, John. "My 2019 Apple Report Card". Daring Fireball. Retrieved June 23, 2020.
Gruber, John. "What You See in the Finder Should Always Be Correct". Daring Fireball. Retrieved June 23, 2020.

dosdude1.com

"macOS Catalina Patcher". dosdude1.com. Retrieved February 9, 2020.

eclecticlight.co

Oakley, Howard (November 11, 2019). "Time Machine and backing up in Catalina". Eclectic Light. Retrieved March 11, 2021.

macobserver.com

"Kernel Extensions Won't Work in macOS 10.16". The Mac Observer. March 26, 2020.
"macOS 10.15 Catalina Deprecates UNIX Scripting Languages". The Mac Observer. June 5, 2019.

mozilla.org

bugzilla.mozilla.org

"1679929 - Cap the User-Agent string's reported macOS version at 10.15". bugzilla.mozilla.org. Retrieved February 25, 2022.

sixcolors.com

Snell, Jason (January 31, 2020). "Apple in 2019: The Six Colors report card". Six Colors. Retrieved June 23, 2020.

techcrunch.com

"Apple unveils macOS 11.0 Big Sur, featuring a new aesthetic and redesigned apps". TechCrunch. June 22, 2020. Retrieved June 22, 2020.
"iOS apps will run on macOS with Project Catalyst". June 3, 2019.

theverge.com

Carman, Ashley (November 10, 2020). "Apple announces macOS Big Sur release date". The Verge. Retrieved November 10, 2020.
Statt, Nick (February 16, 2018). "Twitter discontinues its Mac desktop app after years of spotty support". The Verge. Retrieved June 3, 2019.
Warren, Tom (June 3, 2019). "Apple unveils new macOS update with iPad apps". The Verge. Retrieved June 3, 2019.
Peters, Jay (October 7, 2019). "You need a MacBook with a butterfly keyboard or a modern Mac desktop to use macOS Catalina's Sidecar". The Verge. Retrieved October 8, 2019.
Carman, Ashley (June 3, 2019). "Apple breaks up iTunes, creates separate Podcasts, TV, and Music apps for macOS". The Verge. Retrieved June 3, 2019.
Statt, Nick (June 4, 2019). "Apple will permanently remove Dashboard in macOS Catalina". The Verge. Retrieved June 5, 2019.
Bohn, Dieter (October 7, 2019). "macOS Catalina review: transition period". The Verge. Retrieved June 23, 2020.

tidbits.com

Shayer, David (October 21, 2019). "Six Reasons Why iOS 13 and Catalina Are So Buggy". TidBITS. Retrieved June 23, 2020.

valuewalk.com

"How To Connect PS4, Xbox One Controller To iPhone, Apple TV, Mac". ValueWalk. September 2, 2019. Retrieved September 6, 2019.

variety.com

Roettgers, Janko (June 3, 2019). "Apple Is Officially Killing iTunes, Replacing It With Three Dedicated Media Apps". Variety. Retrieved June 3, 2019.

web.archive.org

"macOS Catalina". Apple Inc. Archived from the original on November 10, 2020. Retrieved June 3, 2019.
"How to upgrade to macOS Catalina". Apple Support. Archived from the original on October 21, 2019.
"How to upgrade to macOS Mojave". Apple Support. Archived from the original on December 19, 2019.
Cunningham, Andrew (October 27, 2022). "Apple clarifies security update policy: Only the latest OSes are fully patched". Ars Technica. Archived from the original on February 12, 2023. Retrieved February 12, 2023.
Cunningham, Andrew (November 12, 2021). "PSA: Apple isn't actually patching all the security holes in older versions of macOS". Ars Technica. Archived from the original on January 1, 2023. Retrieved February 12, 2023.
"Analyzing a watering hole campaign using macOS exploits". Google. November 11, 2021. Archived from the original on December 19, 2021. Retrieved February 12, 2023.

webkit.org

bugs.webkit.org

"217364 – [macOS] Bump reported current shipping release UA to 10_15_7". bugs.webkit.org. Retrieved February 25, 2022.

zdnet.com

"Apple neutered ad blockers in Safari, but unlike Chrome, users didn't say a thing". ZDNET. Retrieved September 21, 2019.