windmill

The premium Open Source alternative to Retool

🎯 Best for:Turning scripts into UIs and production-grade workflows.
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What is windmill?

Replaces Retool for internal UIs and Temporal for workflow orchestration. Runs Python, TypeScript, and Go scripts as scalable workflows with a Rust-based executor for maximum speed.

Tech Stack
HTMLLow-Code & Builder

Why windmill?

  • Blazing fast (Rust)
  • Code-first approach
  • Airflow-grade orchestration

Limitations

  • UI builder less polished
  • Requires coding skills
  • Database management required
3/5/2026
Last Update
885
Forks
669
Issues
Other
License
Financial Leak Detected

Stop the "SaaS Tax"

Your team could be burning cash. Switching to windmill instantly boosts your runway.

Competitor Cost
-$1,440
/ year (est. based on Retool)
Self-Hosted
$0
/ year
Team Size10 Users
150+
SAVE 100%

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