Canny - Canny helps you collect and organize feature requests to better understand customer needs and prioritize your roadmap.
Frill - A better way to collect customer feedback
Survicate - Collect feedback on your website and find out more about your visitors.
Prowess - The simplest way to collect and leverage product feedback
RealEye - Online Research Platform with Webcam Eye-Tracking.
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