Pastel - Sticky note-based feedback collection tool for live websites
Usersnap - Visual Feedback - Usersnap helps your business with its versatile feedback platform to build better, more successful products and services with the help of user feedback. Collect feedback along your product development lifecycle. Try it for free.
klynd - Visual feedback and bug-tracking tool to accelerate web testing and improve customer relationships.
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Sesov - A community for anonymous design feedback