The operating was called OS X, pronounced O.S. The Macintosh line of computers have always shipped with an Operating System created by Apple. The very first was version 1 (called system 1). Prior to Mac OS 8, they simply called the OS System.
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.
Following 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. OS X is Apple’s operating system that runs on Macintosh computers. It was called “Mac OS X” until version OS X 10.8, when Apple dropped “Mac” from the name. OS X was originally built from NeXTSTEP, an operating system designed by NeXT, which Apple acquired when Steve Jobs returned to.
If your macOS isn't up to date, you may be able to update to a later version.
![For For](https://www.10wallpaper.com/wallpaper/1152x864/1501/Snow_Lake_sunset-Bing_theme_wallpaper_1152x864.jpg)
![System System](/uploads/1/1/9/8/119876855/953088713.png)
Mac Operating System Download
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?
Os X Operating System Download
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.
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.
List Of Os X Versions
macOS | Latest version |
---|---|
macOS Catalina | 10.15.7 |
macOS Mojave | 10.14.6 |
macOS High Sierra | 10.13.6 |
macOS Sierra | 10.12.6 |
OS X El Capitan | 10.11.6 |
OS X Yosemite | 10.10.5 |
OS X Mavericks | 10.9.5 |
OS X Mountain Lion | 10.8.5 |
OS X Lion | 10.7.5 |
Mac OS X Snow Leopard | 10.6.8 |
Mac OS X Leopard | 10.5.8 |
Mac OS X Tiger | 10.4.11 |
Mac OS X Panther | 10.3.9 |
Mac OS X Jaguar | 10.2.8 |
Mac OS X Puma | 10.1.5 |
Mac OS X Cheetah | 10.0.4 |