Debian is a Linux release, which is widespread for desktop computers, but it's been becoming more popular as a server OS over the last few years as well. It's very dependable and safe, as fixes are released in a couple of days after an issue is discovered. Debian has a large support community, so when you have any kind of questions or troubles with the OS or with some of the 30,000+ packages it comes with, you can easily contact the developers directly 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, since all your questions will be handled by exactly the same people that built Debian in the first place, so they have a thorough knowledge of how their own system works. Because the Operating System is absolutely free to use and distribute, no license charges will be added to your web hosting fees and you'll be able to change the code files and any other software which you install without any restrictions, so as to optimize the software environment for your Internet sites. What's more, Debian performs very well on any hardware, as it is light and fast and doesn't require a lot of memory.