LimeSurvey

LimeSurvey is the Open Source Online Survey Tool. LimeSurvey basically contains everything you need for doing nearly every survey with grace. LimeSurvey currently offers: * Unlimited number of questions in a survey * Unlimited number of participants to a survey * Unlimited number of surveys at the same time * 20 different question types with more to come * Ability to set conditions for questions depending on earlier answers (branching the survey) * Multilingual Surveys * Admin panel translated to more than 50 languages * Creation of a printable survey version * Re-usable editable answer sets * Ready-made importable questions * Assessment surveys * Quotas * Anonymous or open surveys as well as closed surveys * Optional public registration for surveys * Sending of invitations, reminders and tokens by email * Option for participants to buffer answers to continue survey at a later time * Cookie or session based surveys