Build and customize your own web-based surveys with LimeSurvey. LimeSurvey has loads of features such as the ability to use multiple question types, survey branching, supports dozens of languages, public or private surveys, and you can provide a token to ensure that people can’t take a survey twice. LimeSurvey has basic reporting and analytics features to help you understand results, and you can export the results into Excel, CSV, SPSS and other formats.