I know this is not a forum to ask for suggestions like this, but i am desperately looking for solution on the problem.ProblemI am using Windows server 2003 SE. And as heard Microsoft will not provide support for windows server 2003 anymore.Looking forI want to migrate to a open source server OS which will be proper replacement for the server. Only one thing comes to my mind is Linux, but there are different distributions of Linux, like Red Hat, ubuntu, Cent OS, SlackWare, SUSE and many more. Among them few have only enterprise version of Linux Server. I am not quite sure to go with which open source server. If any other linux distribution is suitable, then also you please suggest.MoreThe need is not for very big organization rather it's for mid-size company with around 1000 students. Along with Essential features of server i need to have LDAP, CVS and dhcp, file server, printer server and similar packages. 
Open Source OS alternative for Windows Server 2003
linux;windows;opensuse