Debian is a Linux distribution, that is preffered for desktop computers, but it has been gaining popularity as a server Operating System during the last few years too. It is very stable and safe, as fixes are released in a couple of days after an issue is discovered. Debian has a vast support community, so if you have any questions or problems with the OS or with some of the 30,000+ packages it includes, you can easily contact the developers right away via email using special e-mail lists and receive a reply in 15-20 minutes. The Debian community provides the top level of support possible, as your questions will be handled by exactly the same people who built Debian in the first place, so they have an in-depth knowledge of how their system operates. Because the Operating System is absolutely free to use and distribute, no license costs will be added to your website hosting fees and you can modify the program code files and any additional software that you install without any restrictions, in order to optimize the software environment for your websites. In addition, Debian performs really well on any hardware, because it is light and quick and does not need much memory.