What type of tools are we talking about? and what about costs?
If you are looking for something that you can run with little to no knowledge, you can look into software like
OpenVAS,
Nessus or
Nexpose.
In this area Nessus is probably the gold standard, although it will cost money if you use it commercially (there is a free home version).
OpenVAS is very similar (it was originally based on an old version of Nessus) but free and from what I've heard not quite as good plugin support.
Nexpose also exists in a free "community" version.
If you are looking for a collection of tools, you want to be looking at
Kali Linux, OpenVAS is included in Kali.