Langflow
Build AI agents and workflows visually.
New to this? What open source means and how to read this page.
What it is
A visual tool for building and deploying AI agents and retrieval workflows with a drag-and-drop editor.
Good for
Prototyping agents and RAG flows without writing everything by hand.
The catch
It is aimed at builders. Moving from a prototype to something reliable still needs engineering and testing.
Facts checked on 12 October 2026. We have not yet run a hands-on test of this tool. When we do, it gets a "Tested" mark here. Approximate US list prices for an individual plan, from third-party price trackers checked on 12 Oct 2026. Monthly billing where it exists. Regions, taxes and promotions change them. Confirm at the vendor before you decide.
More in Developer tools
Deploy your apps on your own server.
Replaces: Vercel
/Heroku
A Postgres backend with auth and storage.
Replaces: Firebase
A whole backend in one file.
A project worth knowing about