Document your network

Now, that I’ve build my company’s network from the scratch, I need to document it: server h/w, s/w, network connections, VPNs, network procedures, backup routines, etc.
Network is not big: 10 servers, 4 sites – something like that. Would anyone recommend software that I could use to document it. Perhaps, something like editable database that I could later add to.
Thanks.