LimeSurvey

LimeSurvey is a web‑based platform for creating and administering online questionnaires, polls, and surveys. It runs on standard PHP‑ready web servers and supports MySQL, PostgreSQL, MariaDB or MSSQL back‑ends, allowing unlimited numbers of surveys and questions with more than thirty built‑in question types and hundreds of templates. The editor lets users customize appearance through fonts, colors, logos, CSS and JavaScript, and provides multilingual support for over eighty languages.

The software includes extensive survey logic such as skip‑logic, branching, and conditional display, enabling complex workflows for feedback collection, academic research, or stakeholder polling. Responses can be accessed via public links, QR codes, or invite‑only modes, and the system offers built‑in statistics, advanced data analysis tools, and an API for remote control. Security features comprise two‑factor authentication, GDPR‑compliant data handling, anonymization, and WCAG 2.0 accessibility.

LimeSurvey is released under GPL‑2.0, self‑hostable, and free of subscription fees, making it suitable for businesses, educational institutions, governments, and any organization that needs a flexible, privacy‑focused survey solution without vendor lock‑in. Community support is available through forums, Discord, and a public bug tracker.