Windmill is an open-source developer platform for building internal tools, workflows, and scripts — enabling teams to turn Python, TypeScript, Go, and Bash scripts into production-ready internal apps and scheduled jobs with a UI, permissions, and audit logs. Unlike Retool (UI-focused), Windmill is code-first for teams that prefer writing actual code over drag-and-drop. 12,000+ GitHub stars.
Windmill
Open-source platform for scripts and workflows
Best for: Developer teams wanting to deploy scripts and workflows as production internal tools with UI, scheduling, and audit logs without DevOps complexity
- Free plan
4.2/5 ratingEditorial score 79/100windmill.dev
The editorial note
What to know about Windmill
Is it right for you?
Who Windmill suits
Choose it if
- Developer teams wanting to deploy scripts and workflows as production internal tools with UI, scheduling, and audit logs without DevOps complexity
Look elsewhere if
- Non-technical teams wanting drag-and-drop app building (Retool or Appsmith is better for visual app building
- Windmill requires actual coding)
What you get
Key features
- Script deployment
- Workflow orchestration
- Scheduling
- Audit logs
- Multi-language
- Self-hosting
- UI builder
Works with
Integrations6
PostgreSQLREST APIsPythonTypeScriptBashGo
The trade-off
Pros and cons
Pros
- 12K+ GitHub stars
- Open-source
- Code-first
- Multi-language
- Scheduling
- Audit logs
- Free
Cons
- Requires coding knowledge
- Less visual than Retool
- Smaller community
Quick read
At a glance
- Category
- Development & Coding
- Pricing model
- Freemium
- Free plan
- Available
- Free trial
- Not listed
- Website
- windmill.dev
The verdict
Our take on Windmill
Best code-first internal tool platform for developer teams wanting to deploy Python and TypeScript scripts as scheduled jobs with UI and audit logs. Windmill's code-first approach serves platform engineering teams that already write scripts for data processing and automation but lack the infrastructure to deploy them reliably — data engineers at startups choose Windmill because wrapping an existing Python data pipeline script in Windmill provides scheduling, error alerting, execution history, and a parameter form for non-technical users without rewriting the logic.
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