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, multilingual support, and advanced survey logic, making it ideal for complex survey needs. On the other hand, Ramen provides a user-friendly interface with real-time collaboration and is more suitable for teams looking for quick and efficient survey solutions.