Ubuntu is a really popular Operating System, that employs the Linux kernel. Even though it is used primarily on PCs, its server version has been gaining in popularity lately as well. Ubuntu is among the lightest Linux distributions available and it's compatible with almost any hardware, that makes it a universal OS. It is also very stable and secure and has an no less than a 5-year support life cycle, so you are able to receive official safety and performance updates. Unlike many other Operating Systems, Ubuntu is distributed without license fees and you will be able to customize its core, or any of the thousands of packages it contains, in any way you find fit. This allows you to install the best software environment for all your web apps regardless of their specifications. Because of the popularity of the OS, Ubuntu has huge developer and user communities, so you will always find a lot of materials on the Internet about any question or problem which you may have.