This software can be used to trace the location of IPs and Website.
Lets say you're chatting with someone on IRC or you got an email from someone anonymous and you want to know the location of that person then all you have to do is get his IP, paste it in to Smart WhoIs prompt and press ENTER.
It will then give you all the information of the ISP which owns that IP which certainly gives you the location.
You can also use this tool for tracking websites. Just type the website address omitting the www part and it will tell you the website where it was registered the time of registration, the time of expiration, location and contact information of the registrar.