Windmill (17,452 Stars) Developer Platform 2026

Windmill (17,452 stars) turns plain Python and TypeScript scripts into internal apps, cron jobs and workflows with a UI - here is how to go from script to app in one afternoon.

💡 What You Will Learn

Windmill (17,452 stars) turns plain Python and TypeScript scripts into internal apps, cron jobs and workflows with a UI - here is how to go from script to app in one afternoon.

📜 Table of Contents

• The short answer
• Core building blocks
• From script to app in 3 steps
• Why teams like it
• FAQ

The short answer

windmill-labs/windmill (17,452 stars, Rust) is an open-source developer platform that turns scripts into apps. You write a normal Python or TypeScript function, and Windmill gives it a UI, a REST API, scheduling, and permission control - without you building a frontend or a server.

Core building blocks

1. Scripts - plain functions with typed inputs
2. Flows - connect scripts into workflows (loops, branches, error handling)
3. Apps - drag-and-drop UI that calls your scripts
4. Triggers - cron, webhook, or on-demand

From script to app in 3 steps

1. Write a function (Python example):

def send_digest(workspace: str, recipients: list[str]):
    # your logic here
    return {"sent": len(recipients), "workspace": workspace}

1. Paste it into Windmill under Scripts - inputs become form fields automatically.
2. Create an App: drag a button, bind it to the script, and you have an internal tool with auth built in.

Run locally:

docker run -p 8000:8000 ghcr.io/windmill-labs/windmill:latest
# Open http://localhost:8000 - default admin is admin / changeme

Why teams like it

• No frontend work for internal tools: the auto-generated UI covers 90% of needs.
• One platform for scripts, cron jobs, and approval workflows.
• Self-hosted: your scripts and secrets never touch a third-party cloud.

FAQ

Does it support TypeScript? Yes - Python, TypeScript, Go, Bash, and SQL are all first-class.

Can I use it as a cron replacement? Absolutely - flows support cron schedules with retries and alerts.

Is the community edition enough? For individuals and small teams, yes - the open-source edition is fully functional.

❓ FAQ

Does it support TypeScript?

Yes - Python, TypeScript, Go, Bash, and SQL are all first-class.

Can I use it as a cron replacement?

Absolutely - flows support cron schedules with retries and alerts.

Is the community edition enough?

For individuals and small teams, yes - the open-source edition is fully functional.