UmfrageOnline is an online survey service developed in Switzerland by enuvo GmbH. Established in 2007, the platform has been used by millions (the site cites over 3 million users). It offers free accounts with no limits on questions or responses, plus features like anonymous feedback and white-label surveys. The site emphasizes that it is fully compliant with EU and Swiss data protection laws (GDPR and Swiss DSG) and that all data is stored in European data centers.