macOS versions: Every version including the latest

Macworld
Wondering what the name of the latest macOS version is? Want to know what the next version of macOS will be? 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 in order: from the newest macOS to the first version of Mac OS X and the codenames that Apple used for them. We’ll also show you how you can check which version of macOS you are running and find out what the latest version