Open source app-builder projects
Every project in the registry tagged app-builder, ranked by real GitHub adoption.
Empower your team to build custom internal tools rapidly
Flexible database meets intuitive spreadsheet interface
Open-source, self-hosted AI app builder — an agent builds real apps in isolated sandboxes on your own server, each live at a preview URL. Self-host in one comma
Frequently asked questions
How many open source app-builder projects are there?
This registry tracks 3 projects tagged app-builder, with 63,638 GitHub stars between them. The most-adopted is AppSmith at 40,894 stars.
Are these app-builder projects free to use?
Yes — 2 of the 3 carry an explicit open-source licence across 2 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which app-builder project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these app-builder projects still maintained?
3 of the 3 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.