Ubuntu is a really popular OS, that uses the Linux kernel. Even though it is used primarily on desktops, its server version has been gaining in popularity recently as well. Ubuntu is among the lightest Linux releases available and it is compatible with almost any hardware, that makes it a universal OS. It is also very stable and secure and has an a minimum of a five-year support life cycle, so you can get official safety and performance updates. Unlike alternative Operating Systems, Ubuntu is distributed with no license fees and you will be able to customize its core, and / or any of the numerous packages it contains, in any way you see fit. This allows you to set up the right software environment for your web apps whatever their requirements. Because of the popularity of the OS, Ubuntu has large developer and user communities, so you can always find find lots of materials on the world wide web regarding any question or problem which you may have.