Widi (Who Is Doing It?) is a Web-based system for conducting an online survey. It includes a questionnaire and code for creating graphical representations of its collected statistics. It was created as part of a research project at the TU Berlin whose purpose is to learn more about Open Source developers. Widi is written in PHP3, and it is database independent, by means of PHPLib. It has support for four languages, a FAQ, a privacy policy, and it allows comments to be submitted.
