Debian is a Linux distribution, that is widely used for desktop machines, yet it has been gaining in popularity as a server Operating System during the last couple of years too. It's really dependable and safe, as fixes are released within 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 any of the 30,000+ packages it features, you're able to contact the developers right away via electronic mail using special mailing lists and receive a reply within 15-20 min. The Debian community offers the best level of support possible, as all your questions will be handled by exactly the same people that created Debian in the first place, so they have a detailed knowledge of how their system works. Since the Operating System is 100% free to use and distribute, no license charges will be included with your website hosting fees and you'll be able to customize the program code files and any additional software that you install without restrictions, in order to optimize the software environment for your Internet sites. Furthermore, Debian performs really well on any kind of hardware, as it is light and quick and does not need much memory.