The Big Boom! Mac OS

The Big Boom! Mac OS

macOS Big Sur elevates the world's most advanced desktop operating system to a new level of power and beauty. Experience Mac to the fullest with a refined new design. Enjoy the biggest Safari update ever. Discover new features for Maps and Messages. And get even more transparency around your privacy. Learn how to upgrade to macOS Big Sur.
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The Big Boom Mac Os Catalina
macOS Big Sur updates improve the stability, performance, or compatibility of your Mac and are recommended for all macOS Big Sur users. After installing macOS Big Sur, choose System Preferences from the Apple menu , then click Software Update to check for the latest updates. Learn more about updating the software on your Mac.
For details about the security content of these updates, see Apple Security Updates. For details about enterprise changes in these updates, see What's new for enterprise in macOS Big Sur.
macOS Big Sur 11.3macOS Big Sur 11.3adds support for AirTag, includes iPhone and iPad app improvements for Macs with M1, introduces separate skin tone variations for emoji with couples, and adds more diverse voice options for Siri.
AirTag and Find My
Boom 3D 1.3.11 - 3D surround sound and phenomenally rich audio. Download the latest versions of the best Mac apps at safe and trusted MacUpdate. Boom 2 is an all-new system-wide Mac audio app that is designed especially for OS X Yosemite. It comes with a smart interface, self-calibrates itself accordi. Mac Boom Boom Bloom Spring 2019 Cherry Blossom CollectionHi lovelies,Today I'm taking you through all of the latest Mac collection, Limited Edition for Sprin.
Support for AirTag to keep track of and find your important items like your keys, wallet, backpack, and more, privately and securely in the Find My app
The Find My network with hundreds of millions of devices can help you find your AirTag, even when it isn't nearby
Lost Mode notifies you when your AirTag is found, and you can enter a phone number where you can be contacted
iPhone and iPad apps on Macs with M1
Option to change an iPhone and iPad app's window size
Support for displaying the highest resolution version of an iPhone or iPad app in full screen
Keyboard support for iPhone and iPad games designed to use device tilt
Keyboard, mouse, and trackpad support for iPhone and iPad games that support game controllers
Emoji
Support for separate skin tones for each individual in all variations of the couple kissing emoji and couple with heart emoji
New face emojis, heart emojis, woman with a beard emoji
Siri
Siri now includes more diverse voice options
Apple Music
Autoplay keeps music playing by automatically playing a similar song, once you've reached the end of a song or playlist
City charts showcase what's popular in over 100 cities from all over the world
Podcasts
Podcasts Show Pages are redesigned to make it easier to start listening
Option to save and download episodes, automatically adding them to your Library for quick access
Download behavior and notification settings can be customized on a show-by-show basis
Top Charts and popular categories in Search help you discover new shows

News
Redesigned News+ feed enables Apple News+ subscribers to quickly find, download, and manage magazine and newspaper issues
All-new Search experience that helps you find relevant topics, channels, and stories
Safari
Start Page section order can now be customized
Additional WebExtensions API lets developers offer extensions that replace the new tab page
Web Speech API lets developers incorporate speech recognition into their webpages for real-time captioning, dictation, and voice navigation
WebM and Vorbis video and audio format support
Reminders
Ability to sort Today Smart list
Support for syncing the order of reminders in lists across your devices
Option to print your reminder lists
Gaming
Xbox Series X|S Wireless Controller or Sony PS5 DualSense Wireless Controller support
Mac computers with the M1 chip
Hibernation support 
About This Mac
About this Mac displays Apple warranty status and AppleCare+ coverage in the Service tab when signed in with Apple ID
Support for purchasing and enrolling in AppleCare+ for eligible Mac computers from About This Mac
This release also fixes the following issues:
Reminders created via Siri may be unintentionally set for early morning hours
iCloud Keychain might not turn off
AirPods audio routing to incorrect device for Automatic Switching
AirPods Automatic Switching notifications might be missing or duplicated
External 4K monitors may not display in full resolution when connected over USB-C
Login window may not display properly after restarting Mac mini (M1, 2020)
The Dwell feature may not work in the Accessibility Keyboard
Some features may not be available for all regions or on all Apple devices, and require an Apple ID.
macOS Big Sur 11.2.3macOS Big Sur 11.2.3 provides important security updates and is recommended for all users.
macOS Big Sur 11.2.2macOS Big Sur 11.2.2 prevents MacBook Pro (2019 or later) and MacBook Air (2020 or later) models from incurring damage when they are connected to certain third-party, non-compliant powered USB-C hubs and docks.
macOS Big Sur 11.2.1macOS Big Sur 11.2.1 addresses an issue that may prevent the battery from charging in some 2016 and 2017 MacBook Pro models.
Some features may not be available for all regions, or on all Apple devices.
macOS Big Sur 11.2macOS Big Sur 11.2 improves Bluetooth reliability and fixes the following issues:
External displays may show a black screen when connected to a Mac mini (M1, 2020) using an HDMI to DVI converter
Edits to Apple ProRAW photos in the Photos app may not save
iCloud Drive could turn off after disabling the iCloud Drive Desktop & Documents Folders option
System Preferences may not unlock when entering your administrator password 
Globe key may not display the Emoji & Symbols pane when pressed
Some features may not be available for all regions, or on all Apple devices.
macOS Big Sur 11.1macOS Big Sur 11.1 introduces support for AirPods Max, TV app enhancements, Apple News widgets, and privacy information on the App Store. This release also includes bug fixes for your Mac.
AirPods Max
Support for AirPods Max, new over-ear headphones
High fidelity audio for rich sound
Adaptive EQ adapts sound in real time to the personal fit of ear cushions
Active Noise Cancellation to block out environmental noise
Transparency mode to hear the environment around you
Apple TV
An all-new Apple TV+ tab makes it easy to discover and watch Apple Original shows and movies
Enhanced search so you can browse by category such as genre and see recent searches and suggestions as you type
Top search results shown with the most relevant matches across movies, TV shows, cast, channels, and sports
Apple News
Apple News widgets are now available in Notification Center
App Store
New privacy information section on App Store pages that includes a developer-reported summary of the app's privacy practices
In-game dashboard within Arcade games recommends new Arcade games to play
iPhone and iPad apps on Macs with M1
New window options for iPhone and iPad apps let you switch between landscape and portrait orientations or expand a window to fill the entire screen 
Photos
Apple ProRAW photos can be edited in the Photos app
Safari
Ecosia search engine option in Safari
Air Quality Five nights with red stick mans mac os.
Available in Maps and Siri for locations in China mainland
Health recommendations are provided in Siri for the United States, United Kingdom, Germany, India, and Mexico at certain air-quality levels
Data in Maps and Siri reflects updated national scales for Germany and Mexico
This release also addresses the following issues:
QuickTime Player might quit when opening a movie with a timecode track after upgrading from macOS Catalina
Bluetooth connection status was not displayed in Control Center
Reliability of unlocking your Mac automatically with your Apple Watch
Trackpad scrolling speed may be faster than expected on MacBook Pro models
LG UltraFine 5K Display may incorrectly display at 4K resolution on Macs with M1
Some features may not be available for all regions, or on all Apple devices.
macOS Big Sur 11.0.1Design 
New design for apps makes it easier to focus on your content and take action with space efficient toolbars and full height sidebars 
Updated menu bar features wider spacing and a new translucent material that becomes more vibrant when you interact with it
Refreshed system sounds include the boot chime and sounds for transferring files, moving items to the trash, locking files, and more
Control Center 
Control Center puts your favorite menus and controls in one handy place in the menu bar so you can quickly adjust settings as you work
Additional controls appear when you click to expand Control Center menus
Support for pinning favorite menus from Control Center to the menu bar
Notification Center 
Updated Notification Center brings notifications and widgets together in one view
Interactive notifications display additional information and actions when you expand them
Beautiful, new data-rich widgets for Calendar, Clock, Notes, Photos, Podcasts, Reminders, Screen Time, Stocks, and Weather
Edit view lets you to add new widgets and customize their size
Support for widgets from third-party apps
Safari
World's fastest desktop browser with industry-leading performance and energy efficiency*
Customizable new start page lets you set a background image and decide what appears, including Reading List, iCloud Tabs, Privacy Report and more 
Expanded extensions support and new dedicated category in the App Store for discovering new extensions
New tab design featuring favicons in tabs, and website previews that appear when you hover over a tab
Translation (beta) for English, Spanish, Simplified Chinese, French, German, Russian or Brazilian Portuguese [US-English and Canadian-English only]
Privacy Report gives you visibility into how Safari keeps your browsing your business, with an overview of trackers blocked by Intelligent Tracking Prevention
Safari password monitoring securely screens saved passwords for any that may have been involved in a data breach
Safari privacy prompts for extensions let you choose when a website can work with an extension
Messages 
Pinned conversations keep up to nine of your favorite threads at the top of the list
Mentions let you direct a message to an individual in a group conversation
Inline replies let you reply to a specific message earlier in the conversation
Message effects for balloons, confetti, lasers and more
#images helps you find and add trending GIFs to messages
Memoji makes it simple to create a personalized character and send stickers that match your mood and personality
Maps
Guides offer recommendations for places to go and things to do, curated by a selection of trusted brands
Look Around to explore cities in a high-resolution, interactive 3D experience
Indoor maps for major airports and shopping centers
Cycling directions helps you find bike-friendly routes to your destination
Electric vehicle routing helps you plan trips for supported vehicles that you add on iPhone
Some features may not be available for all regions, or on all Apple devices. 
* Performance will vary based on system configuration, network connection, and other factors.
Which Mac operating system is the best is a topic of numerous debates among Apple fans. 
Since the mission of this blog is to refute myths and legends around Macs, it's time for me to provide my 2 cents about the issue on hand. While everything below is just my opinion, as a long-time Mac user and veteran software engineer, I hope my opinion worth something.
The best Mac OS version is the one that your Mac is eligible to upgrade to. In 2021 it is macOS Big Sur. However, for users that need to run 32-bit apps on Mac, the best macOS is Mojave. Also, older Macs would benefit if upgraded at least to macOS Sierra for which Apple still releases security patches.
How to Tell Which macOS You Are RunningTo find out which macOS is currently running on your Mac, follow these steps:
Click on Apple logo in the top left corner of the menubar
In the dropdown click on the first item: About This Mac
The first line in the Overview tab is the name of the current OS.
What Version of OS Can My Mac Run?Not all Macs can be upgraded to the latest OS version. For instance, old Macs powered by PowerPC CPUs cannot run OS intended for Intel-based computers. Also, some versions have hardware limitations. 
For instance, Mojave cannot be installed on MacBook Pro earlier than Mid 2012 model.
Check below to know exactly what version of OS your Mac can run.
Which OS is Best for my Mac Anytime someone asks me which OS is best for them I always suggested going with the latest. Things have changed recently, however. 
Should I Upgrade to macOS Catalina or Big Sur?While personally I like macOS Big Sur and have it installed on my MacBook Pro, it comes with serious breaking changes. 
The first issue is compatibility.
Big Sur is a transition OS which is designed to help Apple to move from Intel processors to their own chips on ARM. 
After I installed Big Sur on my MacBook Pro mid 2020 (pre-Silicon), most of my apps, including Microsoft Office, were working as expected. 
Paper guitar mac os. However, my VMWare Fusion 11 does not start anymore, so I have to purchase a new license if I want to keep using it (or roll back to Catalina). Luckily, I took a full backup before the upgrade.
The second breaking issue is the lack of 32-bit app support.
macOS Catalina and Big Sur can only run 64-bit apps. 
If you wondering whether you should upgrade to macOS Catalina or Big Sur, first verify that you don't have any 32-bit apps. But first, take a back up, so you can go back in case something breaks after the upgrade.
For instance, I had to remove uTorrent after upgrade. And I didn't know that uTorrent is 32-bit!
How to Know If App is 32-bit or 64-bitTo find out whether the app on your Mac is 32-bit or 64-bit follow these steps:
Click on Apple logo in the top left corner of the Mac screen
Click on About This Mac option
Click on System Report button in Overview tab (first one)
Scroll down to Software -> Applications
Find the app and check Kind
Which macOS Should I UseIf you have an older Mac which is not eligible to upgrade with some latest software or hardware, I'd suggest upgrading at least to Sierra (or better High Sierra) for the following reasons:
Sierra is still supported by Apple, and it gets security updates
APFS file system is available
It supports Siri
Significant security improvements
The most important point when choosing the best OS is the ability to get security updates. While Apple generally does not announce the OS end of life dates, it is possible to know when they stop releasing security updates from this page. 
For instance, according to the page, the last security update for OS X Yosemite was released on September 12, 2017. The last update for OS X El Capitan was in July 2018, and Carnegie Mellon University confirmed that El Capitan's end of life date was August 2018. 
Snow Leopard MythI know that some users on forums believe that the best OS version for Macs was Snow Leopard. But that is a myth. And I know how such myths get created.
Once I worked in the company, which was selling a 20-year old product. And customers were still using and didn't want to switch to new versions, because the old one was rock solid. 
I then talked to the engineer who worked on the project, and he revealed that the product was a total disaster when it was first deployed. Engineers had to work on-site for almost a year in order to fix all bugs. 
After five or so years of polishing the product, it becomes virtually bug-free, and nobody now remembers how bad it was when it was first rolled out. A similar thing happened Snow Leopard, and it was recognized as best mac os version after some time.
How to Update to the Latest VersionThere are two ways to update to the latest OS version on Mac:
From the Software Update section in System Preferences
Use a download link
Using Software UpdateThis is by far the best option, but it only available if you have Yosemite, or later OS installed already. If you enabled automatic updates, then Mac will inform you that the next macOS is available.
Just open System Preferences, go to Software Update and click on the Upgrade Now button.
This method is also best if wondering how to check if you have the latest version of OS installed on your Mac. Only the version compatible with your hardware will appear here. 
For instance, my the latest version for Mac Mini 2012 is Mojave, I can't install anything newer than that.
If you are having problems with updates or having issues post-upgrade check my post about troubleshooting macOS.
Using download linksFor older systems or in case you need to downgrade, you have to download a standalone installer in DMG format. The palace of bexingdome mac os. DMG stands for disk image, similar to ISO, just different formats.
After downloading the installer, just double click on it and follow instructions. Again, do not forget to take a backup before the upgrade.
Mac OS Comparisons: Requirements, Features, Compatibility, Download LinksFollowing is a high-level description of all Mac operating systems as early as Mountain Lion. 
You can refer to those descriptions when deciding which operating system is best for your iMac, Mac Pro, Mac mini, or MacBook.
With each OS description, I included a list of Macs supported. However, you can use Mac OS compatibility checker for more detailed information.
macOS 11 Big Sur macOS v11 (codename Big Sur) is the latest version of the operating system for Apple computers.
Release date: October 13, 2020
Hardware Requirements: RAM requirement 4GB. Big Sur is the first OS to support new Macs using ARM technology (in the future).
FeaturesThe biggest design refresh since macOS X.
Support for new ARM processors.
Safar improved performance and power consumption.
Time Machine supports backup to APFS volumes.
One-click translation for 7 languages.
Redesigned maps
Software Compatibility Issues
Only 64-bit apps are allowed to run on Big Sur.
How to installThere are two ways to install Big Sur: enable automatic updates in System Preferences or download by using the following link.
Or check my post with tips on installing macOS on unsupported devices.
List of Apple computers compatible with macOS Big SurMacBook (2015 and later)
MacBook Air (2013 and later)
MacBook Pro (2013 and later)
Mac mini (2014 and later)
iMac models (2014 and later)
iMac Pro (2017 and later)
Mac Pro (2013 and later)
macOS 10.15 Catalina Release date: October 7, 2019
Hardware Requirements: RAM requirement increased from 2GB to 4GB.
The Big Boom Mac Os 7FeaturesIntroduced Sidecar, which allows for Macs to use an iPad as an external display.
iTunes was replaced by separate apps: Music, Podcasts, and TV.
Find My Mac and Find My Friends have merged into one app.
Software Compatibility Issues
macOS Catalina is the first Mac operating system that does not support 32-bit applications. Only 64-bit apps are allowed to run on Catalina.
How to installThere are two ways to install Catalina: enable automatic updates in System Preferences or download by using the following link.
List of Apple computers compatible with macOS CatalinaMacBook (Early 2015 or later)
MacBook Air (Mid 2012 or later)
MacBook Pro (Mid 2012 or later)
Mac mini (Late 2012 or later)
iMac models (Late 2012 or later)
iMac Pro (All models)
Mac Pro (Late 2013)
macOS 10.14 MojaveRelease date: September 24, 2018
Hardware Requirements: 2GB RAM and 18.5GB free space on disk
FeaturesThe main feature of Mojave is 'Dark Mode'
FaceTime adds group feature which allows chatting with up to 32 people
News, Stocks, Voice Memos, and Home apps were ported from iOS to Mac.
How to installIf your Mac is eligible to update to Mojave, then the easiest way to install it is by enabling automatic updates. Downloading a standalone Mojave installer could be a little tricky.
List of Apple computers compatible with macOS Mojave

News
Redesigned News+ feed enables Apple News+ subscribers to quickly find, download, and manage magazine and newspaper issues
All-new Search experience that helps you find relevant topics, channels, and stories
Safari
Start Page section order can now be customized
Additional WebExtensions API lets developers offer extensions that replace the new tab page
Web Speech API lets developers incorporate speech recognition into their webpages for real-time captioning, dictation, and voice navigation
WebM and Vorbis video and audio format support
Reminders
Ability to sort Today Smart list
Support for syncing the order of reminders in lists across your devices
Option to print your reminder lists
Gaming
Xbox Series X|S Wireless Controller or Sony PS5 DualSense Wireless Controller support
Mac computers with the M1 chip
Hibernation support 
About This Mac
About this Mac displays Apple warranty status and AppleCare+ coverage in the Service tab when signed in with Apple ID
Support for purchasing and enrolling in AppleCare+ for eligible Mac computers from About This Mac
This release also fixes the following issues:
Reminders created via Siri may be unintentionally set for early morning hours
iCloud Keychain might not turn off
AirPods audio routing to incorrect device for Automatic Switching
AirPods Automatic Switching notifications might be missing or duplicated
External 4K monitors may not display in full resolution when connected over USB-C
Login window may not display properly after restarting Mac mini (M1, 2020)
The Dwell feature may not work in the Accessibility Keyboard
Some features may not be available for all regions or on all Apple devices, and require an Apple ID.
macOS Big Sur 11.2.3macOS Big Sur 11.2.3 provides important security updates and is recommended for all users.
macOS Big Sur 11.2.2macOS Big Sur 11.2.2 prevents MacBook Pro (2019 or later) and MacBook Air (2020 or later) models from incurring damage when they are connected to certain third-party, non-compliant powered USB-C hubs and docks.
macOS Big Sur 11.2.1macOS Big Sur 11.2.1 addresses an issue that may prevent the battery from charging in some 2016 and 2017 MacBook Pro models.
Some features may not be available for all regions, or on all Apple devices.
macOS Big Sur 11.2macOS Big Sur 11.2 improves Bluetooth reliability and fixes the following issues:
External displays may show a black screen when connected to a Mac mini (M1, 2020) using an HDMI to DVI converter
Edits to Apple ProRAW photos in the Photos app may not save
iCloud Drive could turn off after disabling the iCloud Drive Desktop & Documents Folders option
System Preferences may not unlock when entering your administrator password 
Globe key may not display the Emoji & Symbols pane when pressed
Some features may not be available for all regions, or on all Apple devices.
macOS Big Sur 11.1macOS Big Sur 11.1 introduces support for AirPods Max, TV app enhancements, Apple News widgets, and privacy information on the App Store. This release also includes bug fixes for your Mac.
AirPods Max
Support for AirPods Max, new over-ear headphones
High fidelity audio for rich sound
Adaptive EQ adapts sound in real time to the personal fit of ear cushions
Active Noise Cancellation to block out environmental noise
Transparency mode to hear the environment around you
Apple TV
An all-new Apple TV+ tab makes it easy to discover and watch Apple Original shows and movies
Enhanced search so you can browse by category such as genre and see recent searches and suggestions as you type
Top search results shown with the most relevant matches across movies, TV shows, cast, channels, and sports
Apple News
Apple News widgets are now available in Notification Center
App Store
New privacy information section on App Store pages that includes a developer-reported summary of the app's privacy practices
In-game dashboard within Arcade games recommends new Arcade games to play
iPhone and iPad apps on Macs with M1
New window options for iPhone and iPad apps let you switch between landscape and portrait orientations or expand a window to fill the entire screen 
Photos
Apple ProRAW photos can be edited in the Photos app
Safari
Ecosia search engine option in Safari
Air Quality Five nights with red stick mans mac os.
Available in Maps and Siri for locations in China mainland
Health recommendations are provided in Siri for the United States, United Kingdom, Germany, India, and Mexico at certain air-quality levels
Data in Maps and Siri reflects updated national scales for Germany and Mexico
This release also addresses the following issues:
QuickTime Player might quit when opening a movie with a timecode track after upgrading from macOS Catalina
Bluetooth connection status was not displayed in Control Center
Reliability of unlocking your Mac automatically with your Apple Watch
Trackpad scrolling speed may be faster than expected on MacBook Pro models
LG UltraFine 5K Display may incorrectly display at 4K resolution on Macs with M1
Some features may not be available for all regions, or on all Apple devices.
macOS Big Sur 11.0.1Design 
New design for apps makes it easier to focus on your content and take action with space efficient toolbars and full height sidebars 
Updated menu bar features wider spacing and a new translucent material that becomes more vibrant when you interact with it
Refreshed system sounds include the boot chime and sounds for transferring files, moving items to the trash, locking files, and more
Control Center 
Control Center puts your favorite menus and controls in one handy place in the menu bar so you can quickly adjust settings as you work
Additional controls appear when you click to expand Control Center menus
Support for pinning favorite menus from Control Center to the menu bar
Notification Center 
Updated Notification Center brings notifications and widgets together in one view
Interactive notifications display additional information and actions when you expand them
Beautiful, new data-rich widgets for Calendar, Clock, Notes, Photos, Podcasts, Reminders, Screen Time, Stocks, and Weather
Edit view lets you to add new widgets and customize their size
Support for widgets from third-party apps
Safari
World's fastest desktop browser with industry-leading performance and energy efficiency*
Customizable new start page lets you set a background image and decide what appears, including Reading List, iCloud Tabs, Privacy Report and more 
Expanded extensions support and new dedicated category in the App Store for discovering new extensions
New tab design featuring favicons in tabs, and website previews that appear when you hover over a tab
Translation (beta) for English, Spanish, Simplified Chinese, French, German, Russian or Brazilian Portuguese [US-English and Canadian-English only]
Privacy Report gives you visibility into how Safari keeps your browsing your business, with an overview of trackers blocked by Intelligent Tracking Prevention
Safari password monitoring securely screens saved passwords for any that may have been involved in a data breach
Safari privacy prompts for extensions let you choose when a website can work with an extension
Messages 
Pinned conversations keep up to nine of your favorite threads at the top of the list
Mentions let you direct a message to an individual in a group conversation
Inline replies let you reply to a specific message earlier in the conversation
Message effects for balloons, confetti, lasers and more
#images helps you find and add trending GIFs to messages
Memoji makes it simple to create a personalized character and send stickers that match your mood and personality
Maps
Guides offer recommendations for places to go and things to do, curated by a selection of trusted brands
Look Around to explore cities in a high-resolution, interactive 3D experience
Indoor maps for major airports and shopping centers
Cycling directions helps you find bike-friendly routes to your destination
Electric vehicle routing helps you plan trips for supported vehicles that you add on iPhone
Some features may not be available for all regions, or on all Apple devices. 
* Performance will vary based on system configuration, network connection, and other factors.
Which Mac operating system is the best is a topic of numerous debates among Apple fans. 
Since the mission of this blog is to refute myths and legends around Macs, it's time for me to provide my 2 cents about the issue on hand. While everything below is just my opinion, as a long-time Mac user and veteran software engineer, I hope my opinion worth something.
The best Mac OS version is the one that your Mac is eligible to upgrade to. In 2021 it is macOS Big Sur. However, for users that need to run 32-bit apps on Mac, the best macOS is Mojave. Also, older Macs would benefit if upgraded at least to macOS Sierra for which Apple still releases security patches.
How to Tell Which macOS You Are RunningTo find out which macOS is currently running on your Mac, follow these steps:
Click on Apple logo in the top left corner of the menubar
In the dropdown click on the first item: About This Mac
The first line in the Overview tab is the name of the current OS.
What Version of OS Can My Mac Run?Not all Macs can be upgraded to the latest OS version. For instance, old Macs powered by PowerPC CPUs cannot run OS intended for Intel-based computers. Also, some versions have hardware limitations. 
For instance, Mojave cannot be installed on MacBook Pro earlier than Mid 2012 model.
Check below to know exactly what version of OS your Mac can run.
Which OS is Best for my Mac Anytime someone asks me which OS is best for them I always suggested going with the latest. Things have changed recently, however. 
Should I Upgrade to macOS Catalina or Big Sur?While personally I like macOS Big Sur and have it installed on my MacBook Pro, it comes with serious breaking changes. 
The first issue is compatibility.
Big Sur is a transition OS which is designed to help Apple to move from Intel processors to their own chips on ARM. 
After I installed Big Sur on my MacBook Pro mid 2020 (pre-Silicon), most of my apps, including Microsoft Office, were working as expected. 
Paper guitar mac os. However, my VMWare Fusion 11 does not start anymore, so I have to purchase a new license if I want to keep using it (or roll back to Catalina). Luckily, I took a full backup before the upgrade.
The second breaking issue is the lack of 32-bit app support.
macOS Catalina and Big Sur can only run 64-bit apps. 
If you wondering whether you should upgrade to macOS Catalina or Big Sur, first verify that you don't have any 32-bit apps. But first, take a back up, so you can go back in case something breaks after the upgrade.
For instance, I had to remove uTorrent after upgrade. And I didn't know that uTorrent is 32-bit!
How to Know If App is 32-bit or 64-bitTo find out whether the app on your Mac is 32-bit or 64-bit follow these steps:
Click on Apple logo in the top left corner of the Mac screen
Click on About This Mac option
Click on System Report button in Overview tab (first one)
Scroll down to Software -> Applications
Find the app and check Kind
Which macOS Should I UseIf you have an older Mac which is not eligible to upgrade with some latest software or hardware, I'd suggest upgrading at least to Sierra (or better High Sierra) for the following reasons:
Sierra is still supported by Apple, and it gets security updates
APFS file system is available
It supports Siri
Significant security improvements
The most important point when choosing the best OS is the ability to get security updates. While Apple generally does not announce the OS end of life dates, it is possible to know when they stop releasing security updates from this page. 
For instance, according to the page, the last security update for OS X Yosemite was released on September 12, 2017. The last update for OS X El Capitan was in July 2018, and Carnegie Mellon University confirmed that El Capitan's end of life date was August 2018. 
Snow Leopard MythI know that some users on forums believe that the best OS version for Macs was Snow Leopard. But that is a myth. And I know how such myths get created.
Once I worked in the company, which was selling a 20-year old product. And customers were still using and didn't want to switch to new versions, because the old one was rock solid. 
I then talked to the engineer who worked on the project, and he revealed that the product was a total disaster when it was first deployed. Engineers had to work on-site for almost a year in order to fix all bugs. 
After five or so years of polishing the product, it becomes virtually bug-free, and nobody now remembers how bad it was when it was first rolled out. A similar thing happened Snow Leopard, and it was recognized as best mac os version after some time.
How to Update to the Latest VersionThere are two ways to update to the latest OS version on Mac:
From the Software Update section in System Preferences
Use a download link
Using Software UpdateThis is by far the best option, but it only available if you have Yosemite, or later OS installed already. If you enabled automatic updates, then Mac will inform you that the next macOS is available.
Just open System Preferences, go to Software Update and click on the Upgrade Now button.
This method is also best if wondering how to check if you have the latest version of OS installed on your Mac. Only the version compatible with your hardware will appear here. 
For instance, my the latest version for Mac Mini 2012 is Mojave, I can't install anything newer than that.
If you are having problems with updates or having issues post-upgrade check my post about troubleshooting macOS.
Using download linksFor older systems or in case you need to downgrade, you have to download a standalone installer in DMG format. The palace of bexingdome mac os. DMG stands for disk image, similar to ISO, just different formats.
After downloading the installer, just double click on it and follow instructions. Again, do not forget to take a backup before the upgrade.
Mac OS Comparisons: Requirements, Features, Compatibility, Download LinksFollowing is a high-level description of all Mac operating systems as early as Mountain Lion. 
You can refer to those descriptions when deciding which operating system is best for your iMac, Mac Pro, Mac mini, or MacBook.
With each OS description, I included a list of Macs supported. However, you can use Mac OS compatibility checker for more detailed information.
macOS 11 Big Sur macOS v11 (codename Big Sur) is the latest version of the operating system for Apple computers.
Release date: October 13, 2020
Hardware Requirements: RAM requirement 4GB. Big Sur is the first OS to support new Macs using ARM technology (in the future).
FeaturesThe biggest design refresh since macOS X.
Support for new ARM processors.
Safar improved performance and power consumption.
Time Machine supports backup to APFS volumes.
One-click translation for 7 languages.
Redesigned maps
Software Compatibility Issues
Only 64-bit apps are allowed to run on Big Sur.
How to installThere are two ways to install Big Sur: enable automatic updates in System Preferences or download by using the following link.
Or check my post with tips on installing macOS on unsupported devices.
List of Apple computers compatible with macOS Big SurMacBook (2015 and later)
MacBook Air (2013 and later)
MacBook Pro (2013 and later)
Mac mini (2014 and later)
iMac models (2014 and later)
iMac Pro (2017 and later)
Mac Pro (2013 and later)
macOS 10.15 Catalina Release date: October 7, 2019
Hardware Requirements: RAM requirement increased from 2GB to 4GB.
The Big Boom Mac Os 7FeaturesIntroduced Sidecar, which allows for Macs to use an iPad as an external display.
iTunes was replaced by separate apps: Music, Podcasts, and TV.
Find My Mac and Find My Friends have merged into one app.
Software Compatibility Issues
macOS Catalina is the first Mac operating system that does not support 32-bit applications. Only 64-bit apps are allowed to run on Catalina.
How to installThere are two ways to install Catalina: enable automatic updates in System Preferences or download by using the following link.
List of Apple computers compatible with macOS CatalinaMacBook (Early 2015 or later)
MacBook Air (Mid 2012 or later)
MacBook Pro (Mid 2012 or later)
Mac mini (Late 2012 or later)
iMac models (Late 2012 or later)
iMac Pro (All models)
Mac Pro (Late 2013)
macOS 10.14 MojaveRelease date: September 24, 2018
Hardware Requirements: 2GB RAM and 18.5GB free space on disk
FeaturesThe main feature of Mojave is 'Dark Mode'
FaceTime adds group feature which allows chatting with up to 32 people
News, Stocks, Voice Memos, and Home apps were ported from iOS to Mac.
How to installIf your Mac is eligible to update to Mojave, then the easiest way to install it is by enabling automatic updates. Downloading a standalone Mojave installer could be a little tricky.
List of Apple computers compatible with macOS MojaveThe Big Boom Mac Os DownloadMacBook (Early 2015 or later)
MacBook Air (Mid 2012 or later)
MacBook Pro (Mid 2012 or later)
Mac mini (Late 2012 or later)
iMac (Late 2012 or later)
iMac Pro (All models)
Mac Pro (Late 2013 and 2010-2012 models with upgraded GPU)
macOS 10.13 High SierraThe Big Boom Mac Os XRelease date: September 25, 2017
Hardware Requirements: 2GB RAM and 14.3GB free space on disk
FeaturesAPFS (Apple File System) becomes the default file system in High Sierra. It's a significant upgrade from the older HFS+ in terms of speed, size, and security
iCloud support of Messages which allows sync messages of the account across multiple devices
Mail app uses 35% less storage space due to optimizations
List of Apple computers compatible with macOS High SierraMacBook (Late 2009 or newer)
MacBook Pro (Mid 2010 or newer)
MacBook Air (Late 2010 or newer)
Mac mini (Mid 2010 or newer)
iMac (Late 2009 or newer)
Mac Pro (Mid 2010 or newer)
How to installHere is a High Sierra download link.
macOS 10.12 SierraThis is the first macOS version. Previous OS versions for Macs were called OS X (X stands for 10).
Release date: September 20, 2016
Hardware Requirements: 2GB RAM and 8GB free space on disk
FeaturesSiri was introduced to Macs
Optimized storage with iCloud sync
Auto-lock feature allows unlocking MacBook with paired Apple Watch
APFS preview available
Disk Utility can manage RAID sets again
Significant security improvements
How to installHere is a Sierra download link.
List of Apple computers compatible with macOS SierraMacBook (Late 2009 or newer)
MacBook Pro (Mid 2010 or newer)
MacBook Air (Late 2010 or newer)
Mac mini (Mid 2010 or newer)
iMac (Late 2009 or newer)
Mac Pro (Mid 2010 or newer)
OS X 10.11 El CapitanLast OS X version.
Release date: September 30, 2015
Hardware Requirements: 2GB RAM and 8GB free space on disk
The Big Boom Mac Os CatalinaFeaturesSystem Integrity Protection – a security feature that protects even when the root user executes the process
Performance improvements: open PDF files four times faster, Mail is twice faster, launching apps 40% faster
Notes app similar to the app in iOS
Macs compatible with OS X El Capitansame as OS Mountain Lion.
How to installHere is El Capitan download link.
OS X 10.10 Yosemite Release date: October 16, 2014
Hardware Requirements: 2GB RAM and 8GB free space on disk
Macs compatible with OS X Yosemite Same as OS Mountain Lion.
FeaturesMajor user design overhaul
Introduction of Handoff and Continuity features
Photos app replaced iPhoto and Aperture
How to installHere is Yosemite download link.
OS X 10.9 Mavericks First free Mac OS. Previous OS versions vary from $19.99 to $129.
Release date: October 22, 2013
Hardware Requirements: 2GB RAM and 8GB free space on disk
FeaturesCompressed Memory feature automatically compresses inactive apps when approaching maximum memory capacity
Timer coalescing is a feature that reduces CPU usage by up to 72 percent
App Nap puts apps that are not currently visible to sleep
Macs compatible with OS X MavericksSame as OS Mountain Lion.
How to installOS X Mavericks installer is not available on Apple Site. Follow instructions here to install Mavericks.
OS X 10.8 Mountain LionMust be purchased. Fixed many bugs introduced in OS X Lion.
Release date: July 25, 2012
System Requirements: 2GB RAM and 8GB free space on disk
FeaturesNew apps: Notification Center, Notes, Messages, Game Center
AirPlay mirroring allowed to mirror Mac screen to Apple TV
Application updates automatically install from the App Store
List of Apple computers compatible with OS X Mountain LioniMac (Mid-2007 or newer)
MacBook (Late 2008 Aluminum, or Early 2009 or newer)
MacBook Air (Late 2008 or newer)
MacBook Pro (Mid/Late 2007 or newer)
Mac mini (Early 2009 or newer)
Mac Pro (Early 2008 or newer)
Xserve (Early 2009)
How to installMountain Lion installer is not available on Apple Site. Follow instructions here to install OS X Mountain Lion.
List of older Mac OS VersionsFollowing Mac OS versions are still running on older Macs, but Apple does not support them anymore, and there is no point to upgrade (or downgrade) to them:
OS X 10.7 Lion
OS X 10.6 Snow Leopard
Mac OS X 10.5 Leopard
Mac OS X 10.4 Tiger
Mac OS X 10.3 Panther
Mac OS X 10.2 Jaguar
Mac OS X 10.1 Puma
Mac OS X 10.0 Cheetah