Teable is an Airtable alternative for building database apps with a spreadsheet UI, multiple views, real-time collaboration, and a plugin system, backed by PostgreSQL.

21.7k stars1.3k forkslast commit Actively maintained
Ycode is a no-code website and web-app builder providing a visual editor, CMS/collections, hosting, workflows, and integrations to create responsive sites, membership apps, marketplaces and custom web applications without coding.
Teable is an Airtable alternative for building database apps with a spreadsheet UI, multiple views, real-time collaboration, and a plugin system, backed by PostgreSQL.

21.7k stars1.3k forkslast commit Actively maintained
Contao is an open-source PHP CMS for building professional, accessible, SEO-friendly and performant websites and web applications; extensible via Symfony bundles and Composer.

436 stars172 forksLGPL-3.0last commit Actively maintained
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 2 of 2 shipped a commit in the last six months. Licences in this list: LGPL-3.0. In exchange you take on hosting, backups and updates yourself.
Browse everything in Automation & Workflow Builders (Low-code).