How is this different from netstat?

The same data, plus the executable's full path and the Windows service names, in a table you can search, filter and sort — and with the ability to act on what you find.

Does it need administrator rights?

It runs without them and shows most of the table. Some processes' details, and ending a process that is not yours, require running it as administrator.

Can it end a process?

Yes, from the details panel. Ending a system service this way stops the service — which is sometimes exactly what you want and sometimes not, so it asks first.