Debian is an Operating System which uses the Linux kernel. Though it is usually set up on desktops, it is being used on an increasing number of web servers too. The reason is that it is very stable, so a server running it will not need to be restarted for months. Debian is also regarded as being among the most secure Operating Systems nowadays, as security patches are released within days after a problem is discovered. This is possible because thousands of experienced developers are part of the Debian project on a voluntary basis and not only do they work on the OS itself, they also provide 24/7 support via special e-mail lists and reply within twenty minutes to any question. In this light, you will enjoy an outstanding level of support directly from the developers who know their own platform in depth, and not from a third-party support team. Debian is also one of several Linux distributions with the highest number of packages - more than 30,000. As the Operating System is absolutely free to use, you are able to modify both the core as well as all of the packages in the way you see fit. In addition, you won't need to pay any kind of license fees.