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.
Bookmark OS - Bookmark OS is like Mac or Windows optimized for bookmarks.
Feedback by Pixelic - Painless design feedback and version control.
Squash Reports - Keep your team in touch every day
Sesov - A community for anonymous design feedback
BugFeedr - Easily collect product feedback from your users.