Limesurvey - Survey Application

LimeSurvey is an open source survey application. Each application could have unlimited surveys and each survey could have unlimited questions and participants. Almost 20 different question types are supported. Images and videos could be uploaded for a survey. It has better users and group management. The access to the survey could be restricted to group.

It supports more than 50 languages for its front end and the survey could also be multi linugual. The survey could be imported and exported to different format including text, PDF, Excel. It allows users to quickly create intuitive, powerful, online question-and-answer surveys that can work for tens to thousands of participants without much effort.
Demo link: http://www.limesurvey.org/en/demo