LimeSurvey – open source online survey application

LimeSurvey is an open source PHP based online survey application that allow you to develop, publish Surveys and collect responses to online surveys. It written in PHP and uses multiple database backend such as MySQL, PostgreSQL or MSSQL etc..

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Users can develop, publish and collect responses to surveys without having knowledge about coding. it also allow survey branching, quota support, custom preferred layout and design using a web template system, export survey results to various formats, and provide basic statistical analysis of survey results. Surveys can be either publicly accessible or be strictly controlled through the use of "once-only" tokens for each survey participant. Additionally results can be anonymous be separation of participants data and result data, even for controlled surveys.

Features of LimeSurvey

Unlimited number of surveys at the same time
Unlimited number of questions in a survey
Unlimited number of participants to a survey
Multilingual surveys
User management
20 different question types with more to come
Simple WYSIWYG HTML Editor
Quotas Management
Integration of pictures and movies into a survey
Creation of a printable survey version
Conditions for questions depending on earlier answers (Skip Logic / Branching)
Re-usable editable answer sets
Ready-made importable questions
Assessment surveys
Anonymous and Not-Anonymous survey
Open and closed group of participant surveys
Optional public registration for surveys
Sending of invitations, reminders and tokens by email
Cookie or session based surveys
Template editor for creating your own page layout
Extended and user-friendly administration interface
Support for Back-office data entry
Survey expiry dates for automation
Enhanced import and export functions to text, CSV, PDF, SPSS, R, queXML and MS Excel format
Basic statistical and graphical analysis with export facility
Screen Reader Accessibility
W3C compliance
Supporting more than 50 different languages in frontend and backend

Download : http://www.limesurvey.org/en/download
Demo : http://www.limesurvey.org/en/demo