Debian is a Linux release, that's widely used for desktop computers, yet it's been gaining popularity as a server Operating System over the last couple of years as well. It is very stable and protected, due to the fact that fixes are released in just a couple of days after an issue is discovered. Debian has a vast support community, so when you have any questions or troubles with the OS or with some of the 30,000+ packages it comes with, you'll be able to contact the developers immediately via electronic mail using special e-mail lists and receive a reply in just 15-20 min. The Debian community gives you the best level of support possible, because 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 own system operates. Because the Operating System is absolutely free to use and distribute, no license costs will be added to your website hosting fees and you can change the program code files and any other software which you install without restrictions, to optimize the software environment for your web sites. What's more, Debian performs really well on any kind of hardware, as it's light and quick and does not need much memory.