Debian is a Linux release, that's widespread for desktop computers, yet it's been gaining popularity as a server Operating System during the last couple of years too. It's very dependable and safe, due to the fact that fixes are released in a few days after an issue is discovered. Debian has a vast support community, so when you have any questions or issues with the OS or with some of the 30,000+ packages it comes with, you'll be able to contact the developers without delay through e-mail using special mailing lists and receive a response in just 15-20 min. The Debian community gives you the top level of support possible, because all of your questions will be handled by the same people that built Debian in the first place, so they have a thorough knowledge of how their system operates. As the Operating System is free to use and distribute, no license costs will be added to your hosting fees and you'll be able to change the program code files and any additional software that you install without restrictions, to optimize the software environment for your websites. In addition, Debian performs really well on any hardware, as it is light and fast and doesn't need much memory.