Windmill
Windmill is an open-source developer platform that turns scripts in Python, TypeScript, Go, SQL and other languages into webhooks, workflows and internal UIs. Its flows include AI agent steps that call an LLM with your scripts as tools, support nested agents and MCP, and run on a fast self-hostable workflow engine. It positions itself as an open-source alternative to Retool and Temporal.
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About Windmill
Windmill is listed in our agent infra category and is aimed at builders. Windmill is an open-source developer platform that turns scripts in Python, TypeScript, Go, SQL and other languages into webhooks, workflows and internal UIs. Its flows include AI agent steps that call an LLM with your scripts as tools, support nested agents and MCP, and run on a fast self-hostable workflow engine. It positions itself as an open-source alternative to Retool and Temporal. Pricing, as the maker states it: Free and open-source Community Edition from $0/mo (self-hosted, unlimited executions, up to 10 SSO users); Enterprise from $120/mo; cloud and self-hosted paid plans (windmill.dev/pricing, checked Oct 22 2026). Core is AGPLv3, some enterprise features proprietary.. Maturity: Mature. We last checked the official link on 2026-10-22.
Windmill at a glance
- Category: Agent infra
- Built for: Developers and teams building with AI agents
- Pricing: Free and open-source Community Edition from $0/mo (self-hosted, unlimited executions, up to 10 SSO users); Enterprise from $120/mo; cloud and self-hosted paid plans (windmill.dev/pricing, checked Oct 22 2026). Core is AGPLv3, some enterprise features proprietary. (as the maker states it)
- GitHub: windmill-labs/windmill · 18,247 stars (as of Oct 22, 2026)
- Official site: windmill.dev
- Listed on AgentScout: Oct 22, 2026
Windmill FAQ
What is Windmill?
Windmill is an open-source developer platform that turns scripts in Python, TypeScript, Go, SQL and other languages into webhooks, workflows and internal UIs. Its flows include AI agent steps that call an LLM with your scripts as tools, support nested agents and MCP, and run on a fast self-hostable workflow engine. It positions itself as an open-source alternative to Retool and Temporal.
How much does Windmill cost?
Windmill's pricing, as the maker states it: Free and open-source Community Edition from $0/mo (self-hosted, unlimited executions, up to 10 SSO users); Enterprise from $120/mo; cloud and self-hosted paid plans (windmill.dev/pricing, checked Oct 22 2026). Core is AGPLv3, some enterprise features proprietary.. Check the official site for current plans.
Where can I find Windmill's source code?
On GitHub at windmill-labs/windmill, which had 18,247 stars as of Oct 22, 2026.
What are alternatives to Windmill?
Similar tools include LiteLLM, Kestra, Inngest, OpenComputer, Arcade and TypeSafe Jev.
Facts from our link-checked listing, the GitHub repository and the official site. See something wrong? Suggest an edit.
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OpenComputer
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