MakeSurvey 

MakeSurvey is a powerful and interactive survey management system, enabling to organize, run and manage various types of surveys. MakeSurvey can process internet and email surveys.
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Opinio 

Opinio is a free and complete survey solution for any platform featuring flexible survey design, advanced reporting, plugin architecture, multilanguage support, high scalability and much more. Ease of use and simple installation makes it suitable to any user.
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