Ubuntu is an extremely popular OS, which uses the Linux kernel. While it is used mainly on personal computers, its server version has been gaining in popularity these days as well. Ubuntu is among the lightest Linux distributions you can get and it's compatible with 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 can receive official protection and performance updates. Unlike lots of other OS's, Ubuntu is distributed devoid of license fees and you can customize its core, and / or any of the countless packages it contains, in any way you see fit. This allows you to install the right software environment for all of your web apps irrespective of their specifications. As a result of the popularity of the Operating System, Ubuntu has vast developer and user communities, so that you'll always find find numerous materials on the web regarding any question or problem which you may have.