Ubuntu is an extremely popular OS, that employs the Linux kernel. Though it's used mainly on desktop machines, its server version has been rising in popularity nowadays as well. Ubuntu is among the lightest Linux releases you can get and it supports almost any hardware, that makes it a universal OS. It is also very stable and secure and has an at least a five-year support life cycle, so you are able to receive official protection and performance updates. Unlike a number of other Operating Systems, Ubuntu is distributed without any license fees and you are able to customize its core, as well as all of the thousands of packages it features, in any way you find fit. This allows you to install the ideal software environment for all of your web apps whatever their requirements. Because of the popularity of the OS, Ubuntu has large developer and user communities, which means that you will always find a lot of materials on the Internet regarding any question or problem which you may have.