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 product or feature? Which versions are earlier (older) or later (newer, more recent) than the version currently installed? To find out, learn which version is installed now.
Old Mac Software
If your macOS isn't up to date, you may be able to update to a later version.
Which macOS version is installed?
Nine major versions of the classic Mac OS were released. The name 'Classic' that now signifies the system as a whole is a reference to a compatibility layer that helped ease the transition to Mac OS X. Macintosh System Software – 'System 1', released in 1984; System Software 2, 3, and 4 – released between 1985 and 1987; System Software 5 – released in 1987. Apr 27, 2020 Free Software for Desktop Video Recording and Mac Live Streaming! Home; Video Software; OBS Studio 25.0.8; Old Versions; Join our mailing list. Stay up to date with latest software releases, news, software discounts, deals and more. Free Download (111 MB) Safe & Secure. Sep 21, 2019 It is not possible to download old versions of macOS in Mojave but the only way to get an older installer is to download it before you update your Mac or find a Mac that runs an older version of the macOS. You need to log into the Mac App Store with your password and download High Sierra’s installer.
From the Apple menu in the corner of your screen, choose About This Mac. You'll see the macOS name, such as macOS Mojave, followed by its version number. If some product or feature requires you 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. And as updates that change the macOS version number become available, this article is updated to show the latest version of that macOS.
Old Versions Of Software Mac Download
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 installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.
| macOS | Latest version |
|---|---|
| macOS Catalina | 10.15.5 |
| 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 |
Learn more
- Always use the macOS that came with your Mac, or a compatible newer version.
- Learn how to reinstall macOS from macOS Recovery.