Debian is a Linux release, that is widely used for desktop computers, but it has been gaining popularity as a server OS during the last few years too. It's really dependable and protected, because fixes are released in a few days after an issue is discovered. Debian has a large support community, so if you have any questions or issues with the OS or with any of the 30,000+ packages it includes, you are able to contact the developers without delay via electronic mail using special e-mail lists and receive a reply within 15-20 min. The Debian community supplies the best level of support possible, as your questions will be handled by the very same people who built Debian in the first place, so they have an exhaustive knowledge of how their own system operates. As the Operating System is free to use and distribute, no license charges will be included with your web hosting fees and you can change the program code files and any other software which you install with no restrictions, in order to optimize the software environment for your sites. In addition, Debian performs very well on any hardware, because it is light and efficient and does not require much memory.