Debian is a well-known Linux release, which is used primarily on desktop computers, but lots of people have begun using it lately as a web server Operating System too, because of the stability and security it offers. The latter is a result of the fact that Debian is developed and supported by numerous qualified volunteers around the globe, so any patch that's needed to fix a particular issue is released in a matter of days. The very same community can also help you with any question or issue which a user may ever encounter, since they can be contacted through email using e-mail lists and a qualified response will be sent in no more than 15-20 minutes. The advantage here is that all your queries will be addressed by the same people who have created the Operating System itself and they have a detailed knowledge of how it functions. As Debian is free, you will not need to pay any kind of license fees to use it and you will be able to personalize it as much as you want or need. This is valid for the Operating System as well as the 30.000+ software packages which are readily available for it.