Mac OS X Lion (version ) is the eighth major release of Mac OS X (now named macOS), Apple's desktop and server operating system for Macintosh computers. A preview of Mac OS X Lion was publicly shown at the "Back to the Mac" Apple . to make the total number of twenty-two languages available in Mac OS ppqotb.mee: Apple Public Source License (APSL). Jul 20, - Mac OS X Lion has dozens of new features, big and small. This visual tour highlights the key new features in Mac OS X Lion. (The Lion license permits installation on two VMs per Mac in addition to directly on the Mac's physical disk.) Finally, I had no software compatibility issues with Lion; Apple. Jun 5, - installation of Moodle on a OS X Lion Server - the new name for Mac OS X Server. This server is a commercial product. The OS X Lion. Click the version number (such as ) to cycle through the build number of Mac OS X and the serial number of your Mac. (It's not unusual to need this info.