Debian is a Linux release, that is widely used for desktop machines, yet it's been gaining in popularity as a server Operating System over the last few years too. It is very stable and protected, since fixes are released in just a couple of days after an issue is discovered. Debian has a large support community, so if you have any kind of questions or problems with the OS or with some of the 30,000+ packages it is equipped with, you're able to contact the developers right away through electronic mail using special e-mail lists and receive a response in 15-20 minutes. The Debian community supplies the top level of support possible, because all of your questions will be handled by the very same people that made Debian in the first place, so they have a thorough knowledge of how their system operates. As the Operating System is absolutely free to use and distribute, no license costs will be added to your website hosting fees and you will be able to customize the code files and any additional software that you install without any restrictions, in order to optimize the software environment for your websites. Furthermore, Debian performs really well on any hardware, as it is light and efficient and doesn't require much memory.