Debian is a Linux distribution, that's widespread for desktop computers, but it has been becoming more popular as a server Operating System during the last couple of years too. It is really dependable and risk-free, as fixes are released within a few days after a problem is discovered. Debian has a vast support community, so when you have any questions or issues with the OS or with any of the 30,000+ packages it features, you can contact the developers right away via electronic mail using special e-mail lists and receive a reply within 15-20 minutes. The Debian community supplies the best level of support possible, because all of your questions will be handled by the very same people that created Debian in the first place, so they have an in-depth knowledge of how their own system works. Because the Operating System is 100% free to use and distribute, no license charges will be added to your web hosting fees and you will be able to change the code files and any other software which you install without restrictions, so as to optimize the software environment for your sites. What's more, Debian performs very well on any kind of hardware, as it's light and fast and doesn't require a lot of memory.