The LimeSurvey package lets you
create online surveys or questionnaires to gather data for your
research. You can publish your survey for people to fill in
online, or print it as a PDF to administer manually. You can
download the data at any stage as a CSV file or in Word, Excel,
or SPSS format for analysis.
This replaces the earlier phpESP
survey system. Full documentation of
LimeSurvey is available online.