Mathesar — #5 Alternative to Airtable

Name: Mathesar
Rating: 4.88 (804 reviews)

100% GPL-3.0 intuitive collaborative spreadsheet UI over native PostgreSQL schemas

Non-profit open-source interface backed by PostgreSQL foreign keys, data types, and Postgres roles—zero proprietary metadata layer required.

License: GPL-3.0 · Pricing: Free & Open Source · Compare all Airtable alternatives · Official Website