FeedbackSpark's answer:
Range of powerful features designed specifically for digital product teams:
Incoming Feedback by Hotjar - Instant visual feedback for your website or app!
Back Market - the refurbished (super) market
Canny - Canny helps you collect and organize feature requests to better understand customer needs and prioritize your roadmap.
Tracksuit - Beautiful, always-on, and radically affordable brand tracking for modern consumer brands. Tracksuit is the new way to measure, understand and communicate the value of brand.
ProductBoard Customer Feedback Portal - Share feature plans and collect feedback at scale for free
Asklayer - Get real answers from your customers with Asklayers surveys, quizzes, polls and more. Works on any website with zero code and includes enterprise level features such auto-segmentation, user tagging, branching, NPS & CSAT calculation.