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Open-source FormAssembly alternative

One open-source alternative to FormAssembly, with its features, GitHub activity and licence.

The open-source alternative to FormAssembly listed on Enlisted is Form.io.

Form.io is listed under form & survey tools. It shipped code in the last 30 days and can be self-hosted.

Last updated October 2, 2026 · ranked by GitHub stars, growth and recent commits

Form.io

Form.io's core form and API engine, a drag-and-drop form builder and data management platform for embedding forms in Angular, React, and Vue applications.

GitHub stars
2.3k
Last commit
yesterday
Licence
OSL-3.0
Self-hosted
Yes
Hosted version
Available

Form.io is a combined form and API platform for building data management applications. This repository is the core form and API engine behind the Form.io service. It lets you design forms with a drag-and-drop builder and then embed them in your applications, and it generates the API that stores the submissions. It runs on Node.js and is released under the OSL-3.0 license.

Forms can be rendered in Angular, React, Vue, or plain JavaScript applications, and the platform was designed for serverless architectures. The official documentation, release information, and guides are at help.form.io, and a walkthrough video shows how to build an application on the open-source platform.

A commercial hosted service is run by the vendor on form.io, while the open-source engine can be self-hosted. Form.io suits teams that need configurable, form-driven applications such as intake, workflows, and internal data collection, and want to avoid hand-coding each form and API endpoint.

Key features

  • Drag-and-drop form builder
  • Auto-generated API for submissions
  • Embeddable in Angular, React, and Vue apps
  • Node.js open-source engine
  • Serverless-oriented architecture
  • Official documentation and tutorials
Read more about Form.ioWebsite GitHub

FormAssembly alternatives: questions

What is the best open-source alternative to FormAssembly?
Form.io is the only open-source alternative to FormAssembly listed on Enlisted so far: Form.io's core form and API engine, a drag-and-drop form builder and data management platform for embedding forms in Angular, React, and Vue applications.
Is Form.io free?
Form.io is open source, so the code is free to use under its licence, and it can be self-hosted on your own server or computer. It also offers a paid or managed cloud version if you'd rather not host it yourself.
How does Enlisted rank FormAssembly alternatives?
By a score built from GitHub stars, star growth over the last 30 days and how recently the code changed. Form.io shipped code in the last 30 days. Data is refreshed daily, and nobody can pay to move up.

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