Patch My PC - Patch My PC Updater is a free, easy-to-use program that keeps over 300 apps up-to-date on your computer.
HackerOne - HackerOne provides a platform designed to streamline vulnerability coordination and bug bounty program by enlisting hackers.
SurfPatrol - SurfPatrol is a free and simple online service for browser and plugins security checking.
Intruder - Intruder is a security monitoring platform for internet-facing systems.
w3af - w3af is a Web Application Attack and Audit Framework
Forcepoint Web Security Suite - Internet Security