Birdeye - #1 most trusted reputation and customer experience platform for local business
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.
Podium - Podium helps your business get more customer reviews, manage customer feedback, customer interaction, and online review management from one software.
KeySurvey - KeySurvey provides survey and questionnaire tools.
NiceJob - Get more reviews and build an build an awesome reputation with NiceJob.
FeedbackServer - asp.net survey software Web based and open source software, for purchase or hosted, written in ASP.NET for Nsurvey