TrackDuck: Visual feedback for web design and development

Service that you can integrate for user feedback.

Super-simple integration: Add a <script> tag to your layout, done.

It will then add a button to the bottom right of your application. When a user clicks it, they can take a screenshot and leave a message. The screenshot then appears in TrackDuck's interface for you to work off.

Current pricing is 9 USD per month for the smallest tier (1 project).