Rydia is a web-based, AJAX frontend to the JSurveyLib survey engine. It provides an easy way to configure surveys / questionnaires and display them on a website. Rydia will work with any web framework because it integrates like an AJAX widget.
A complete survey administration and data collection system. A fully featured replacement for Quancept, supporting CAPI, Web, CATI, PDA and Paper survey modes. Sonar is the reference implementation of JCaiF for CAPI and Web survey interviewing. Try it!