APITable

APITable is an open-source, API-first low-code platform that pairs a fast spreadsheet-style interface with a real database underneath, letting teams organize records, link tables across multiple views, and expose everything over a REST API. It's aimed at developers, startups, and small-to-medium teams who want an Airtable alternative they can self-host and wire into their own software, project management, or CRM workflows. Its main differentiator is being fully open-source and API-oriented, so every datasheet is reachable programmatically and can act as a backend for internal tools and integrations.