Microsoft Windows Server
Need help finding the right Server licensing for you? Learn more about Windows Server licensing here
2016 - The cutting edge, latest and greatest version of Windows Server with many new features. You can learn about Learn about Windows Server 2016 here
2012 - The highly robust, and most commonly used version to the day. You can Learn about Windows Server 2012 here
2008 - One of the pioneers of the the network based operating systems that provided many security features upgraded from it's predecessor, 2003. Learn about Windows Server 2008 here.