UseResponse - Open-source, self-hosted customer feedback software, live chat and helpdesk system that you can install on your server. Organize documentation using knowledge base and get feedback from social networks with centralized system
Incoming Feedback by Hotjar - Instant visual feedback for your website or app!
Product Pains - Giving users a louder voice to help teams build better products.
Canny - Canny helps you collect and organize feature requests to better understand customer needs and prioritize your roadmap.
Nolt - A fast & beautiful way to collect user feedback
ProductBoard Customer Feedback Portal - Share feature plans and collect feedback at scale for free