LimeSurvey

LimeSurvey is an open-source survey platform that can be installed on-prem or used via cloud. It supports unlimited questions, custom branding, and advanced logic for branching or piping. Organizations can create CSAT, NPS, or more extensive questionnaires, distributing links by email or embedding on websites. Results are viewable in real-time charts or exportable to CSV/Excel for deeper analysis. With a large community and plugin ecosystem, LimeSurvey suits those wanting a highly customizable, cost-effective way to run satisfaction or research surveys. A paid cloud version removes server maintenance overhead.