Debian is a Linux distribution, that is widely used for desktop computers, but it has been gaining in popularity as a server Operating System over the last couple of years as well. It is very stable and secure, as fixes are released in a few days after an issue is discovered. Debian has a vast support community, so if you have any questions or troubles with the OS or with some of the 30,000+ packages it includes, you can contact the developers directly through e-mail using special e-mail lists and receive a response in just 15-20 min. The Debian community provides the best level of support possible, since all of your questions will be handled by exactly the same people who created Debian in the first place, so they have a thorough knowledge of how their system functions. As the Operating System is 100% free to use and distribute, no license costs will be added to your web hosting fees and you can modify the program code files and any other software that you install without any restrictions, in order to optimize the software environment for your Internet sites. In addition, Debian performs very well on any hardware, because it's light and effective and does not require a lot of memory.