LimeSurvey (PHPSurveyor) is a free and open source on-line survey application written in PHP based on a MySQL, SQLite, PostgreSQL or MSSQL database, distributed under the GNU General Public License. Developed by Carsten Schmitz / The LimeSurvey team
License: Open Source
LimeSurvey offers extensive customization and advanced features suitable for complex surveys, while Google Drive - Forms provides ease of use and integration with other Google services, making it ideal for quick and simple surveys.