Baserow

Baserow is an open-source no-code database, application builder and automation platform from the Netherlands, started in 2019 by Bram Wiepjes and launched publicly in 2020. It manages its own PostgreSQL backend behind a familiar spreadsheet-style UI, with formulas, multiple views, REST API, real-time collaboration, an automation engine, an AI Assistant for building tables in natural language, and SOC 2 Type II, GDPR and HIPAA compliance. Self-hosting is free; the cloud Free tier covers 3,000 rows per workspace, Premium is $5/user/month and Advanced is $20/user/month, all with unlimited databases.