The Best Free Operating Systems & Updates app downloads for Mac: Apple Boot Camp Support Software Apple Mac OS X Mavericks Apple Mac OS X El Capitan A.

• 3 Ways To Upgrade Mac System Software - WikiHow
• Complete List Of Mac OS X & MacOS Versions - Macworld UK

1. Nov 15, 2019 Apple’s newest Mac operating system is macOS 10.15, also known as macOS Catalina. This is the fifteenth major release of the Mac operating system. MacOS 10.14 Mojave supports most Macs from 2012 onward. If yours ran macOS 10.14 Mojave, it will almost certainly run Catalina.
2. Jun 23, 2018 Of course this only includes Apple software, but if you’re looking for old versions of iMovie, Pages, Keynote, the iLife Suite, older Mac OS X system updates, firmware updates and security updates, older versions of iTunes and QuickTime, and similar Apple apps and software, it’s a great place to start.

Is your Mac up to date with the latest version of the Mac operating system (macOS or OS X)? Is it using the version required by some other product that you want to use with your Mac? Which versions are earlier (older) or later (newer, more recent)? To find out, learn which version is installed now.

If your macOS isn't up to date, you may be able to update to a later version.

3 Ways To Upgrade Mac System Software - WikiHow

Which macOS version is installed?

From the Apple menu  in the corner of your screen, choose About This Mac. You should see the macOS name, such as macOS Mojave, followed by its version number. If you need to know the build number as well, click the version number to see it.

This example shows macOS Catalina version 10.15 build 19A583.

Which macOS version is the latest?

These are all Mac operating systems, starting with the most recent. When a major new macOS is released, it gets a new name, such as macOS Catalina. As updates that change the macOS version number become available, this article is updated to show the latest version of that macOS.

Complete List Of Mac OS X & MacOS Versions - Macworld UK

If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps that are installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.