The Mac OS X Server 10.6 Snow Leopard is an operating system that was designed, developed, and sold by Apple from 2009 to 2011 alongside Apple’s server computers. The system has been released on August 28, 2009, and was available for $499 (Unlimited Clients).
This software gets the last update (10.6.8) on July 25, 2011, and later has been replaced by a newer version of Mac OS X Server 10.7 Lion.
Mac OS X 10.5 Snow Leopard introduced many new features such as a fully 64-bit operating system. On appropriate systems with 4GB of RAM or more, Snow Leopard Server uses a 64-bit kernel to address up to a theoretical 16 TB of RAM.
iCal Server 2 with improved CalDAV support, a new web calendaring application, push notifications, and the ability to send email invitations to non-iCal users.
Address Book Server provides a central location for users to store and access personal contacts across multiple Macs and synchronized iPhones. Based on the CardDAV protocol standard.
Wiki Server 2, with server-side Quick Look and the ability to view wiki content on iPhone. A new Mail Server engine that supports push email so users receive immediate access to new messages. Podcast Producer 2 with dual-source video support.
Also includes a new Podcast Composer application to automate the production process, making it simple to create podcasts with a customized, consistent look and feel. Podcast Composer creates a workflow to add titles, transitions, and effects, save to the desired format and share with wikis, blogs, iTunes, iTunes U, Final Cut Server, or Podcast Library.
Mobile Access Server enables iPhone and Mac users to access secured network services, including corporate websites, online business applications, email, calendars, and contacts. Without requiring additional software, Mobile Access Server acts as a reverse proxy server and provides SSL encryption and authentication between the user’s iPhone or Mac and a private network.
Today Mac OS X 10.6 Snow Leopard is 14 years old!

Mac OS X Server 10.6 Snow Leopard General Information
Released | August 28, 2009 |
Original Price | $499 (Unlimited Client) |
System Requirements | Intel processor 2 GB RAM 10 GB of hard disk space |
Distribution | DVD-ROM |
Order Number | MC190Z/A (Unlimited Client) |
Versions
Versions | Build | Release Date |
Mac OS X Server 10.6 | 10A433 | August 28, 2009 |
Mac OS X Server 10.6.1 | 10B504 | September 10, 2009 |
Mac OS X Server 10.6.2 | 10C540 | November 9, 2009 |
Mac OS X Server 10.6.3 | 10D573 | March 29, 2010 |
Mac OS X Server 10.6.3 v1.1 | 10D578 | April 13, 2010 |
Mac OS X Server 10.6.4 | 10F569 | June 15, 2010 |
Mac OS X Server 10.6.5 | 10H574 | November 10, 2010 |
Mac OS X Server 10.6.5 v1.1 | 10H575 | November 15, 2010 |
Mac OS X Server 10.6.6 | 10J567 | January 6, 2011 |
Mac OS X Server 10.6.7 | 10J869 | March 21, 2011 |
Mac OS X Server 10.6.8 | 10K540 | June 23, 2011 |
Mac OS X Server 10.6.8 v1.1 | 10K549 | July 25, 2011 |