LimeSurvey

LimeSurvey is an advanced online survey system to create quality online surveys.

LimeSur­vey is a free and open source on-line sta­tis­ti­cal sur­vey web app writ­ten in PHP based on a MySQL, SQLite, Post­greSQL or MSSQL data­base, dis­trib­uted un­der the GNU Gen­er­al Pub­lic Li­cense.