Zonka Feedback - Top feedback app designed to collect customer feedback on iPad & Android tablets, Online Surveys on Website, Mobile, Email & SMS. Track NPS & Other Metrics.
Incoming Feedback by Hotjar - Instant visual feedback for your website or app!
FeedbackServer - asp.net survey software Web based and open source software, for purchase or hosted, written in ASP.NET for Nsurvey
Customer Feedback Portal - Ask customers what you should build next
SightMill - SightMill: Innovative customer experience platform that helps you get feedback from your customers. SightMill lets you quickly and easily setup Net Promoter Score surveys via email, on your website, by SMS and at events.
Feedback Fish - Collect feedback & make your customers happy.