Windmill
Windmill is an open-source developer platform to build production-grade internal tools, data pipelines, and workflows from scripts.
Free + paidWebCLIOpen source
Visit websitewindmill.dev
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Windmill is an open-source developer platform to build production-grade internal tools, data pipelines, and workflows from scripts. It supports writing code in over 20 languages with full LSP support and auto-generates UIs for instant endpoints. Users can orchestrate scripts into high-performance flows with sub-20ms overhead and deploy on scalable infrastructure from single-node VPS to Kubernetes clusters. The platform offers a free open-source tier with unlimited executions, alongside paid enterprise plans for advanced security and observability features.
Key features
- Scripting in 20+ languages with LSP support
- Auto-generated UIs from scripts
- Sub-20ms flow orchestration
- Self-hostable on Kubernetes and Docker
- Built-in observability and error handling
Pros & cons
Collected from user feedback found in web search
Pros
- Fast, open-source workflow engine and developer platform
- 13x faster than Airflow
- Alternative to Retool, Superblocks, n8n, Temporal
- Y Combinator backed
Cons
- Smaller community compared to established tools
- Limited enterprise support data
Pricing
Use cases
- Building internal tools
- Creating data pipelines
- Orchestrating workflows
- Backend for full-stack apps
Who it is for
Developerssoftware teams
Integrations
SlackPostgreSQLMySQLRedisAWS S3GmailGitHubStripeNotionMicrosoft Teams
Tags
API
How we verified this
Company, pricing, and feature details come from the primary sources below and our latest verification pass. When sources disagree, the official source and the most recent check win.
Last verified 08/02/2026Verified sources: 1
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