Very useful list. None of these have anything running as a service you can try out easily, I guess that would be a Bad Idea anyway as this kind of tools might either accidentally cause stuff to happen to a server, or be used as part of an attack. I guess script youngsters will not be very much deterred by having to install e.g. a python or ruby library - but any lazy bum that drops the idea to scan some elses site is a win.
