Customer Feedback Portal - Ask customers what you should build next
HackerOne - HackerOne provides a platform designed to streamline vulnerability coordination and bug bounty program by enlisting hackers.
Feedback Tools - Curated directory of tools for getting all the feedback
Acunetix - Audit your website security and web applications for SQL injection, Cross site scripting and other...
Feedback Fish - Collect feedback & make your customers happy.
Forcepoint Web Security Suite - Internet Security