Debian is an Operating System that uses the Linux kernel. Even though it is usually installed on desktops, it is being used on more and more web servers as well. The reason is that it's very stable, so a server running it will not have to be restarted for months. Debian is also considered to be among the most risk-free Operating Systems nowadays, due to the fact that security patches are released within days after an issue is found. 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, in addition, they provide 24/7 support via special mailing lists and reply within 20 minutes to any kind of question. Thus, you'll obtain top-level 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 releases with the highest number of packages - more than 30,000. As the Operating System is absolutely free to use, you'll be able to modify both the core and all of the packages in the way you see fit. Furthermore, you won't need to pay any license fees.
