Ubuntu is a well-liked desktop Operating System, that uses the Linux kernel, and its server version is getting quite popular as well. The main reason is the fact that the operating system is really light and it can function on almost any kind of hardware without issues, utilizing its resources to the fullest. Ubuntu is also very reliable and secure and all Long-Term Support (LTS) editions are supported for a minimum of five years, which warrants that you should have a secure and stable software environment on your web hosting server all the time. Also, Ubuntu has one of the largest user communities in the world, which means that if you experience any kind of problem or have any question, you'll find plenty of resources on the web. Among the main benefits of this Operating System is that it features a large number of software packages which can be easily changed in accordance with your needs and / or the requirements of the applications that you intend to run, not to mention that you won't have to pay any license fees at any time. In contrast, other OS's are paid and their program code is not accessible, thus it cannot be changed.