Debian is a Linux release, that is widely used for desktop computers, but it's been becoming more popular as a server Operating System over the last couple of 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 vast support community, so if you have any kind of questions or troubles with the OS or with any of the 30,000+ packages it includes, you're able to contact the developers immediately through email using special e-mail lists and receive a reply within 15-20 min. The Debian community supplies the top level of support possible, since your questions will be handled by exactly the same people that made Debian in the first place, so they have an exhaustive knowledge of how their system operates. As the Operating System is absolutely free to use and distribute, no license charges will be included with your hosting fees and you can modify the program code files and any additional software that you install with no restrictions, to optimize the software environment for your Internet sites. In addition, Debian performs very well on any hardware, because it is light and fast and does not require a lot of memory.