formr is an open-source survey framework for researchers who run longitudinal and diary studies. It lets researchers chain simple surveys into longer runs, send reminders and feedback, filter participants by eligibility and generate feedback reports with R. It is available as a hosted service at formr.org, and technical users can install a stable release on their own servers.
The imprint of formr.org names the Georg-Elias-Müller-Institut für Psychologie at the University of Göttingen, Germany. The software is published under the BSD 3-Clause licence, and its source code is developed on GitHub. The privacy policy of the hosted service is published by the university's psychology department. The website does not state where the servers are located, so research groups should confirm the data location before use. Institutions that need full control can run the software themselves, which makes formr an alternative to US survey platforms such as Qualtrics for research studies.