limesurvey

PHP-based survey building and runing system

From the website: What is PHP Surveyor? PHP Surveyor is a set of PHP scripts that interact with MySQL to develop surveys, publish surveys and collect responses to surveys. Once a survey has been created it can be published as an online survey (displayed as single questions, group by group or all in one page) or you can use a dataentry system for administration of paper-based versions of the survey. PHP Surveyor can produced 'branching' surveys (set conditions on whether individual questions will display), can vary the look and feel of your survey through a templating system, and can provide basic statistical analysis of your survey results. PHP Surveyor includes the capacity to generate individualised 'tokens', so if you have a list of people you want to invite to participate in a survey you can issue each one with a token, and they will be able to access the survey using that token. This allows for quite good quality control of your surveys.