Goupile is a free eCRF design tool that strives to make form creation and data entry both powerful and easy. Goupile is published under the GPL version 3 license; feel free to use it.

This project is sponsored by NLnet: https://nlnet.nl/project/Goupile/

You can test some features on our online demo instance:

We also offer paid hosting services based on Goupile, tailored to your needs. Check out our pricing page.