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Open source

Bring your own backend

Free MIT licensed

The FlowDrop editor is an MIT-licensed npm package. You install it into your own application and run it on your own infrastructure. There is nothing to buy and no account to create.

You supply the backend. FlowDrop’s REST API is a contract your server implements, so workflows are stored in your database and executed by your code. Implement it yourself.

Get the source code — Open source

Hosted

We run the backend

Contact us Enterprise only

If you are not on Drupal and would rather not run a backend, Factorial.io hosts one for you: flowdrop-rs, a Rust server implementation of the FlowDrop API. You get the same editor, against a backend you do not have to operate.

The hosted backend is for teams that are not on Drupal. It is offered to enterprise customers only, and accounts are provisioned by Factorial.io. Pricing depends on your deployment, so it is a conversation rather than a published rate — tell us what you need and we will come back to you.

Contact Factorial.io — Hosted

Pricing FAQ

Do I need the hosted version to use FlowDrop in Drupal?
No. The Drupal modules include the editor, the execution engine and storage. Everything runs inside your site. The hosted version is for teams that aren’t on Drupal.
Do I need to install the npm package on Drupal?
No. The module ships the editor already built. You don’t need Node or a build step.
Does anything run outside my Drupal site?
No FlowDrop service does. If your workflows call an AI model, that request goes to the provider you configure in Drupal’s AI module.
Is FlowDrop free to use?
Yes. The FlowDrop editor is MIT licensed and free for any project, commercial ones included. On Drupal, the editor, engine and storage all run inside your site; elsewhere you run it yourself, against a backend you provide.
Do I need a backend?
On Drupal, no: the modules include the editor, the engine and the storage. Elsewhere, yes — the npm editor needs a server that stores workflows and runs executions. You can implement the REST contract on your own backend, or have Factorial.io host one. There is also a reference Express server for local development.
What license is FlowDrop under?
MIT. The editor ships as @flowdrop/flowdrop on npm and the source is public at github.com/flowdrop-io/flowdrop.
Is the hosted Rust backend open source?
No. The MIT licence covers the FlowDrop editor. flowdrop-rs, the Rust backend behind the hosted offer, is not published as open source — it is operated by Factorial.io as a service.
How do I get a price for hosting?
Get in touch with Factorial.io through the contact form. The hosted backend is an enterprise offer and is quoted per deployment, so there is no published rate.

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