Debian is a popular Linux release, that is used primarily on desktop computers, still numerous people have begun using it lately as a web server OS as well, due to the stability and protection it provides. The latter is a direct result the fact that Debian is developed and supported by a large number of qualified volunteers all around the world, which means that any patch which is necessary to fix a certain issue is released within a few days. The very same community will also help with any question or trouble that a user may ever experience, as they can be contacted via e-mail using e-mail lists and a competent response will be sent in no more than 15-20 min. The advantage here is that all of your questions will be replied by the same people who have developed the Operating System itself and they have a detailed knowledge of how it functions. As Debian is absolutely free, you will not need to pay any kind of license fees to use it and you can personalize it as much as you want or need. This is valid for both the Operating System and the 30.000+ software packages which are available for it.