Windmill

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Windmill

Open-source developer platform for internal tools and workflows.

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Windmill is a highly performant open-source alternative to Retool and Airplane. It allows developers to turn Python, TypeScript, Go, and Bash scripts into shareable internal tools and robust workflows rapidly.

It automatically generates UIs based on script parameters and executes them on a scalable Rust-based backend, offering a code-first approach to building admin panels and complex automated pipelines.

Key Features

  • Turns scripts (Python, TS, Go) into internal tools
  • Automatically generates UI from code signatures
  • Highly scalable Rust-based execution engine
  • Advanced workflow orchestration
  • Code-first alternative to low-code tools

Frequently Asked Questions

Is Windmill free and open source?

Yes, Windmill is open source.

What can I use instead of Retool?

You can use Windmill as a free, open-source alternative to Retool.

Can I self-host Windmill?

Yes, Windmill can be self-hosted on your own server or cloud infrastructure.

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