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
Acunetix - Audit your website security and web applications for SQL injection, Cross site scripting and other...
Maltego - Maltego is an open source intelligence and forensics application.
Trustwave Services - Trustwave is a leading cybersecurity and managed security services provider that helps businesses fight cybercrime, protect data and reduce security risk.