SpiderFoot - Open source intelligence (OSINT) automation tool.
HackerOne - HackerOne provides a platform designed to streamline vulnerability coordination and bug bounty program by enlisting hackers.
sn0int - sn0int is a semi-automatic OSINT framework and package manager
Nessus - Nessus Professional is a security platform designed for businesses who want to protect the security of themselves, their clients, and their customers.
theHarvester OSINT Tool - theHarvester is a very simple, yet effective tool designed to be used in the early
Intruder - Intruder is a security monitoring platform for internet-facing systems.