AbTest.io - A free url shortener with A/B testing features
Customer Feedback Portal - Ask customers what you should build next
GoodUI Evidence - People's A/B test results that show which UI ideas work best
Feedback Tools - Curated directory of tools for getting all the feedback
PreFlight - Preflight is an Automated Web Testing tool. Allows everyone to automate Web UI tests.
Feedback Fish - Collect feedback & make your customers happy.