LimeSurvey basically contains everything you need for doing nearly every survey.
LimeSurvey currently offers: * Unlimited number of surveys at the same time * Unlimited number of questions in a survey (only limited by your database) * Unlimited number of participants to a survey * Multi-Lingual Surveys * User-Management * 20 different question types with more to come * WYSIWYG HTML Editor *
...Licence : GPL 
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