The Mac OS X Server 10.7 Lion is an operating system that was designed, developed, and sold by Apple from 2011 to 2012 alongside Apple’s personal computers. The system has been released on July 20, 2011, and was available for $49.99 or was preinstalled on currently sold computers.
This software gets the last update (10.7.5) on October 4, 2012.
This Mac OS X Server includes new versions of iCal Server, Wiki Server, and Mail Server. More significantly, Lion Server can be used for iOS mobile device management and came with unlimited client licenses as did Mac OS X Server Snow Leopard.
Starting with Server 10.7 Lion PostgreSQL replaces MySQL as the database provided with Mac OS X Server, coinciding with Oracle Corporation’s acquisition of Sun Microsystems and Oracle’s subsequent attempts to tighten MySQL’s licensing restrictions and to exert influence on MySQL’s previously open and independent development model.
Mac OS X Lion introduced as well FaceTime, AirDrop, Emoji support, Mail 5, Adress Book, Address space layout randomization, Apple Push Notification Service, Auto Save, Auto-Correction, Exposé in Dock, FileVault, Finder improvements, Font Book 3, Full-screen apps, iCal and iChat updates, Launchpad, Multi-touch gestures from iOS, and many more.
Today Mac OS X Server 10.7 Lion is 11 years old!

Mac OS X Server 10.7 Lion General Information
Released | July 20, 2011 |
Original Price | $49.99 |
System Requirements | Mac with Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processor 2 GB RAM 7 GB of hard disk space Mac OS X 10.7 or later |
Distribution | Mac App Store |
Versions
Versions | Build | Release Date |
Mac OS X Server 10.7 | 11A511 | July 20, 2011 |
Mac OS X Server 10.7.1 | 11B26 | August 16, 2011 |
Mac OS X Server 10.7.2 | 11C74 | October 12, 2011 |
Mac OS X Server 10.7.3 | 11D50 | February 1, 2012 |
Mac OS X Server 10.7.4 | 11E53 | May 9, 2012 |
Mac OS X Server 10.7.5 | 11G56 | September 19, 2012 |
Mac OS X Server 10.7.5 Supplemental Update | 11G63 | October 4, 2012 |