OpenClinica - OpenClinica is an open source clinical trials software.
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.
Castor EDC - Castor offers you a user-friendly and fully featured application for electronic data collection.
FeedbackServer - asp.net survey software Web based and open source software, for purchase or hosted, written in ASP.NET for Nsurvey
KeySurvey - KeySurvey provides survey and questionnaire tools.
DeliverPro - Proof of Delivery solution for iPad. Signed, sealed, delivered!