Open source agent-builder projects
Every project in the registry tagged agent-builder, ranked by real GitHub adoption.
Build, automate, and improve AI agents with your team
Customizable no-code component for building flow-based programming applications or workflow automation. 0 external dependencies. Check out https://nocode-js.com
Build and deploy AI agents through visual workflows
Frequently asked questions
How many open source agent-builder projects are there?
This registry tracks 3 projects tagged agent-builder, with 6,792 GitHub stars between them. The most-adopted is Agenta at 4,763 stars.
Are these agent-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 agent-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 agent-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.