Wondering what the name of the latest version of MacOS is? Curious about the versions of Mac OS X that came before? Here we'll fill you in on the names of the different versions of the Mac operating system as well as the code-names that Apple used for them, as well as how you can check which version you are running and find out what the latest version of macOS is.

If you look back at previous iterations of macOS and Mac OS X, a clear pattern emerges. With the exception of the first OS X beta, all versions of the Mac operating system from 2001 to 2012 were all named after big cats, from Cheetah to Panther to Mountain Lion.

But while the public-facing builds were named after big cats, internally, they were named after wines (with the exception of OS X 10.6 and macOS 10.13, both of which had no code-name).

Even after Apple switched public-facing code-names to places in California back in 2013, it carried on naming them after wines internally until 2014. In 2015, Apple decided to change the theme of internal code-names from wines to types of apple. Original.

Then, in 2016, Apple took the plunge to unify the branding of its’ operating systems by rebranding Mac OS X to macOS, which sits nicely alongside iOS, tvOS and watchOS.

Below, you can find a complete list of OS X version code names, along with internal code names (if available).

Mac OS X & macOS version code names

  • OS X 10 beta: Kodiak - 13 September 2000
  • OS X 10.0: Cheetah - 24 March 2001
  • OS X 10.1: Puma - 25 September 2001
  • OS X 10.2: Jaguar - 24 August 2002
  • OS X 10.3 Panther (Pinot) - 24 October 2003
  • OS X 10.4 Tiger (Merlot) - 29 April 2005
  • [OS X 10.4.4 Tiger (Chardonnay)]
  • OS X 10.5 Leopard (Chablis) - 26 October 2007
  • OS X 10.6 Snow Leopard - 28 August 2009
  • OS X 10.7 Lion (Barolo) - 20 July 2011
  • OS X 10.8 Mountain Lion (Zinfandel) - 25 July 2012
  • OS X 10.9 Mavericks (Cabernet) - 22 October 2013
  • OS X 10.10: Yosemite (Syrah) - 16 October 2014
  • OS X 10.11: El Capitan (Gala) - 30 September 2015
  • macOS 10.12: Sierra (Fuji) - 20 September 2016
  • macOS 10.13: High Sierra (Lobo) - 25 September 2017
  • macOS 10.14: Mojave (Liberty) - 24 September 2018
  • macOS 10.15: Catalina - Coming Autumn 2019

What's the latest MacOS

Wondering what the latest version of MacOS is? It is currently macOS 10.14 Mojave, although verison 10.14.1 arrived on 30 October and on 22 January 2019 version 10.14.3 bought some necessary security updates. Version 10.14.4 arrived on 25 March, 10.14.5 on 13 May. Prior the launch of Mojave the most recent version of macOS was the macOS High Sierra 10.13.6 update.

Apple releases various updates to the OS throughout the year, so you can expect updates from time to time. Find out about the latest version of MacOS Mojave here.

You can tell which version of macOS you are running by clicking on the Apple logo in the top left and choosing About This Mac.

If you want to update your Mac to a newer version of MacOS, in older versions of MacOS and Mac OS X click on the Apple logo in the top left and choose App Store, or click on the Mac App Store icon. Then go to the Updates page where you will see details of the software updates that are available. 

In Mojave there is a new pane in System Preferences where you can find Software Updates. You can get to System Preferences from the Apple menu: Click on the Apple logo in the top left and choose System Preferences. You may be taken straight to the Software Update pane, if not click on the Software Update cog icon. Your Mac will search for an update and if there is one you can choose Update Now.

Some Macs will be set to update automatically. If you want your Mac to update automatically follow these steps:

In Mojave:

  1. Open System Preferences.
  2. Click on Software Update.
  3. Check the box beside Download new updates when available.
  4. Now select the box Install macOS updates.

In High Sierra:

  1. Open System Preferences.
  2. Click on App Store.
  3. Check the box beside Automatically check for updates - it should have a tick in it as should the four options below that…
  4. Now deselect the box beside Download newly available updates in the background.

Read about how to update your Mac here.