1. Pure-Mac.com is one of the first Macintosh software compendiums on the internet. Download all your Mac software including freeware, shareware, demos, games, updates.
2. Rather than only being a backup tool, ChronoSync includes both backup and synchronization capabilities. It allows you to backup - including bootable backups - to almost any external device or service, including iPads, iPhones, Windows PCs, and some cloud services.

Use Software Update

1. Choose System Preferences from the Apple menu , then click Software Update to check for updates.
   
2. If any updates are available, click the Update Now button to install them. Or click “More info” to see details about each update and select specific updates to install. You might be asked to enter your administrator password.
   
3. When Software Update says that your Mac is up to date, the installed version of macOS and all of its apps are also up to date. That includes Safari, Music, Photos, Books, Messages, Mail, Calendar, and FaceTime.
4. To automatically install future updates, including for apps that you got from the App Store, select “Automatically keep my Mac up to date.” Your Mac will notify you when updates require it to restart, so you can always choose to install those later.

Update the software on your iPhone, iPad, or iPod touch

Click Update Now on the menu. This option will check online for available updates, and install the latest software update on your computer. If you don't see this option here, click Enable Updates first. The Update Now button should now show up on the menu. When Software Update says that your Mac is up to date, the installed version of macOS and all of its apps are also up to date. That includes Safari, Music, Photos, Books, Messages, Mail, Calendar, and FaceTime. Non-profit organization serving the online community by providing old versions of various programs.

Learn how to update your iPhone, iPad, or iPod touch to the latest version of iOS or iPadOS.

Learn more

• Learn how to get updates for earlier versions of macOS that don't include Software Update preferences.
• You can also use the App Store to update apps or redownload apps that came from the App Store.
• Learn which macOS your Mac is using and how to upgrade to the latest macOS.
• When your Mac is connected to a Personal Hotspot, large updates don't download automatically.

OnyX

OnyX is a multifunction utility that you can use to verify the structure of the system files, to run miscellaneous maintenance and cleaning tasks, to configure parameters in the Finder, Dock, Safari, and some Apple applications, to delete caches, to remove certain problematic folders and files, to rebuild various databases and indexes, and more.
OnyX is a reliable application which provides a clean interface to many tasks that would otherwise require complex commands to be typed using a command-line interface.
WARNING:
There is a specific version of OnyX for each major version of the operating system.
Use the specific version, and don't try to use a non-compatible version.

OnyX 3.9.5 for macOS Big Sur 11

Requirements: Intel-based Mac or Apple M1-based Mac using macOS Big Sur 11.1 or later.

OnyX 3.8.7 for macOS Catalina 10.15

Requirements: Intel-based Mac using macOS Catalina 10.15.

OnyX 3.6.8 for macOS Mojave 10.14

Requirements: Intel-based Mac using macOS Mojave 10.14.

OnyX 3.4.9 for macOS High Sierra 10.13

Requirements: Intel-based Mac using macOS High Sierra 10.13.

OnyX 3.3.1 for macOS Sierra 10.12

Requirements: Intel-based Mac using macOS Sierra 10.12.

OnyX 3.1.9 for OS X El Capitan 10.11

Requirements: Intel-based Mac using OS X El Capitan 10.11.

OnyX 3.0.2 for OS X Yosemite 10.10

Requirements: Intel-based Mac using OS X Yosemite 10.10.

OnyX 2.8.9 for OS X Mavericks 10.9

Requirements: Intel-based Mac using OS X Mavericks 10.9.

OnyX 2.7.4 for OS X Mountain Lion 10.8

Requirements: Intel-based Mac using OS X Mountain Lion 10.8.

OnyX 2.4.8 for OS X Lion 10.7

Requirements: Intel-based Mac using OS X Lion 10.7.

OnyX 2.4.0 for Mac OS X Snow Leopard 10.6

Requirements: Intel-based Mac using Mac OS X Snow Leopard 10.6.

OnyX 2.0.6 for Mac OS X Leopard 10.5

Requirements: PowerPC-based Mac or Intel-based Mac using Mac OS X Leopard 10.5. OnyX only runs from an administrator account.

OnyX 1.8.6 for Mac OS X Tiger 10.4

Requirements: PowerPC-based Mac or Intel-based Mac using Mac OS X Tiger 10.4. OnyX only runs from an administrator account.

OnyX 1.5.3 for Mac OS X Panther 10.3

Requirements: PowerPC-based Mac using Mac OS X Panther 10.3 with BSD subsystem. OnyX only runs from an administrator account.

OnyX 1.3.1 for Mac OS X Jaguar 10.2

Mac Latest Software Update

Requirements: PowerPC-based Mac using Mac OS X Jaguar 10.2 with BSD subsystem. OnyX only runs from an administrator account.