Ubuntu is a really popular OS, which employs the Linux kernel. Although it is used primarily on desktop machines, its server version has been gaining in popularity recently as well. Ubuntu is one of the lightest Linux distributions you can get and it supports 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 are able to get official security and performance updates. Unlike numerous other OS's, Ubuntu is distributed devoid of license fees and you will be able to customize its core, as well as any of the numerous packages it contains, in any way you find fit. This enables you to set up the best software environment for your web applications regardless of their specifications. Because of the popularity of the OS, Ubuntu has huge developer and user communities, so you can always find find plenty of materials online regarding any question or problem which you might have.