Ubuntu is a really popular OS, that uses the Linux kernel. Though it is used mainly on desktop machines, its server version has been rising in popularity recently as well. Ubuntu is among the lightest Linux distributions out there and it is compatible with almost any hardware, that makes it a universal Operating System. It is also very stable and secure and has an at least a five-year support life cycle, so you will be able to receive official security and performance updates. Unlike various other Operating Systems, Ubuntu is distributed devoid of license fees and you are able to modify its core, and / or all of the numerous packages it contains, in any way you find fit. This will enable you to install the ideal software environment for all your web apps whatever their requirements. Due to the popularity of the OS, Ubuntu has vast developer and user communities, so you will always find lots of materials on the world wide web regarding any question or problem which you may have.