Windmill

What is Windmill?

Windmill is an open-source developer platform designed for building scripts, workflows, data pipelines, and internal tools. It serves as a self-hostable alternative to platforms like Retool, Pipedream, and Superblocks, offering developers a way to create APIs, background jobs, and user interfaces without extensive boilerplate code. The platform automatically converts scripts into shareable UIs and enables developers to compose multiple scripts into workflows and internal applications. It supports both autogenerated and custom interfaces for triggering workflows, making it accessible for teams building internal tools at scale. Windmill is built with developers and AI integration in mind, featuring enterprise-grade security alongside its open-source model. The platform emphasizes self-hosting capabilities, giving organizations control over their infrastructure and data. It simplifies workflow orchestration compared to more complex tools like Temporal while providing the flexibility to handle complex automation scenarios. The project is maintained on GitHub and provides a collaborative environment for contributions and customization. Windmill targets backend development teams seeking to reduce development time for internal applications and automation workflows through a unified platform that bridges scripting, orchestration, and UI generation.