Windmill

Windmill is an open-source workflow engine built for developers. Instead of a purely visual builder, you write steps in Python, TypeScript, Go, Bash, or SQL, and Windmill turns them into flows with scheduling, webhooks, and a visual editor for orchestration.

Key Features

Open-source workflow engine for developers
Write steps in Python, TypeScript, Go, or Bash
Visual flow builder with code control
Scheduled jobs and webhooks
Self-hosting or managed cloud
Built-in secrets and variable management

Pricing

Plan	Price	Details
Open Source	$0	Free self-hosted version with full features.
Cloud	$20/user/mo	Hosted version with support and collaboration.
Enterprise	Custom	Self-hosting support, SSO, and SLAs.

Prices as listed in 2026 research. Always check the official site for the latest price — plans change. Free plan: Yes — it has a free plan.

Best for: developers who want a code-first, open-source workflow engine they can self-host.
Popular with: Developers

How it works

It is designed for technical automation: data pipelines, API integrations, scheduled scripts, and internal jobs that need real code. The platform can be self-hosted for free or run in the cloud, with secrets management and collaboration built in.

The open-source version is free, and the cloud version starts at $20 per user per month. Windmill is an excellent choice for developer teams that want code-first automation, though it is not suitable for non-technical users.

Pros and Cons

✓ Pros

Open source with full code control
Great for developer-led automation
Self-hosting keeps data in-house

✗ Cons

Needs coding skill, not a business-user tool
Smaller community than n8n or Airflow
UI is functional rather than polished

Key Features

Pricing

How it works

Pros and Cons

✓ Pros

✗ Cons

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