The best free alternative to Userback is Marker. If that doesn't suit you, our users have ranked more than 25 alternatives to Userback and 19 is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Userback are Survicate (Freemium), Saber (Freemium), Heartcount (Freemium) and Timeline.io (Freemium).
Upload your designs,mockups or wireframes and organize them in projects. Share them with friends, colleagues and clients to get point specific Feedback. Giving Design Feedback is easy possible without any registration by your customers. You can Upload Images and Multipage PDFs
Visual feedback and bug reporting tool for your visitors. Get all the important information you need to fix the bug, including visual snapshot of the page and browser environment info. Offers free plan.
Cereo is a visual feedback and bug reporting tool that lets people give feedback with annotated screenshots and enriched browser data on live websites without signing up or installing browser extensions.