Overview

Windmill is an open-source platform for building internal tools, scripts, workflows, and UIs. Write scripts in TypeScript, Python, Go, or Bash, chain them into flows, and create apps — all self-hostable.

Strengths

  • Open source with self-hosting option
  • Supports TypeScript, Python, Go, and Bash
  • Built-in app builder for internal tools
  • Fast execution with Go-based runtime

Weaknesses

  • Requires developer knowledge
  • Newer product with smaller community
  • Self-hosting needs infrastructure management
  • Less polished than commercial alternatives

Quick info

Category
Automation
Starting price
Free
Free tier
Fully free
Open source
Yes
Best for
Any size
Founded
2022

Last updated 2026-04-12

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