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SurveyGen is a simple perl tool that enables you to generate and present surveys based of simple XML files. The power of this tool is it's simplicity. You just create the xml, and voila, you have your survey.
The Microdata Management Toolkit is a collection of tools for documenting, disseminating and preserving survey and census microdata The project is sponsored by the International Household Survey Network with financial support from the World Bank.
Kaph provides a portable (written in Java) method by which to display and guide users through multiple-subject research surveys. Configuration is handled via XML files. Support for a wide range of types of questions is provided.