Maltego

Maltego is a proprietary. open-source intelligence and forensics application developed by Paterva. See More About Parteve

-Domains
-DNS names
-Netblocks
-IP addresses
-Other

Download Maltego : https://www.paterva.com/web6/products/download.php

For OS Pentester Already as kali linux,ArchAssaul,Blackbox,Blackarch and etc if not have can install