Viable Fit - Measure and improve your product market fit
Incoming Feedback by Hotjar - Instant visual feedback for your website or app!
Startup Growth Roadmap - Get from idea to product market fit
Canny - Canny helps you collect and organize feature requests to better understand customer needs and prioritize your roadmap.
Focus Framework - A hands on guide to find product-market fit w/ lean methods
ProductBoard Customer Feedback Portal - Share feature plans and collect feedback at scale for free