There are many options available for Linux distros, over 500. Most of you can make into a server. Basically, a server is a computer that provides services for other computers, like a web site, or DHCP or ftp download, etc. So it does not take much for a computer to act as a server. However, if you are looking for the professional level server that, in my opinion, leads all other distros in functioning as a server then you need to investigate CentOS. Here is a list of the reasons that CentOS is top on my list for a server.