FakeClients Feedback - 🖌 A simple, free to use platform for design feedback
Customer Feedback Portal - Ask customers what you should build next
Airsketch - Simple screenshots + annotations for Mac 🖥️
Feedback Tools - Curated directory of tools for getting all the feedback
Slack E-mail Add-ins - Quickly forward emails and attachments to Slack
Feedback Fish - Collect feedback & make your customers happy.