Customer Feedback Portal - Ask customers what you should build next
Intercom on Product Management - The ultimate resource for aspiring product managers
Feedback Fish - Collect feedback & make your customers happy.
userinput.io - Get on-demand feedback for your app, website or idea. Learn how to improve by hearing real opinions.
Canny - Canny helps you collect and organize feature requests to better understand customer needs and prioritize your roadmap.
ithinki - A simple user feedback tool for start-ups