You can download old versions of macOS from the Mac App Store or as direct downloads from Apple's website. Create a bootable ...

A modern version of OS X: openconnect is should work on most recent OS X versions. It has been tested and seems to function correctly as far back as 10.9. Mac OS X ...

And you're not limited to macOS—there's also working versions of NeXTSTEP ... 23 years ago, as Mac OS X—has been around longer than the "Classic" OS, which Apple offered for a total of ...

Apple software that adds server functionality to any Mac machine running a current version of macOS. Called "OS X Server" when it debuted with OS X Version 10.7 (Lion), macOS Server adds ...