Debian is a Linux release, that is preffered for desktop computers, yet it's been gaining in popularity as a server Operating System over the last few years too. It's very stable and safe, due to the fact that fixes are released in just a couple of days after a problem is discovered. Debian has a vast support community, so when you have any kind of questions or troubles with the OS or with some of the 30,000+ packages it includes, you can contact the developers immediately through email using special e-mail lists and receive a reply in just 15-20 min. The Debian community supplies the top level of support possible, as all of your questions will be handled by the very same people that created Debian in the first place, so they have a detailed knowledge of how their system operates. As the Operating System is free to use and distribute, no license costs will be added to your web hosting fees and you will be able to change the program code files and any additional software which you install without any restrictions, to optimize the software environment for your Internet sites. In addition, Debian performs very well on any hardware, because it's light and efficient and does not require much memory.