Incoming Feedback by Hotjar - Instant visual feedback for your website or app!
Basil Chat - Design feedback via chat
Canny - Canny helps you collect and organize feature requests to better understand customer needs and prioritize your roadmap.
Planogy - A feedback platform for all the creative work
ProductBoard Customer Feedback Portal - Share feature plans and collect feedback at scale for free
Feedback by Pixelic - Painless design feedback and version control.