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Open-source platform to turn scripts into internal apps & workflows
Windmill has raised $15.0M across 2 funding rounds.
Key people at Windmill.
Windmill was founded in 2022 by Ruben Fiszel (Founder).
Windmill has raised $15.0M in total across 2 funding rounds.
Windmill is an open-source developer platform to quickly build production-grade multi-step internal apps, workflows and integrations from minimal Python and Typescript scripts.
Open-source alternative to Airplane and Pipedream. Simplified temporal with automatic app generation. Usable as a self-hosted AWS Lambda.
Sync your scripts from your github repo or write them directly on Windmill, have them be converted to apps and no-code modules automatically. Use those apps as standalone or, build powerful flows using either those scripts or scripts made by the community on hub.windmill.dev. The experience is similar to no-code tools except that at any point, any module can have its code inspected and tweaked. Leveraging the open-source community, we will build an exhaustive library of scripts for all apis and generic tasks.
You may also wrap Windmill with your own frontend to provide automation as a feature on top of your own SaaS.
Focus on your business logic for all kind of flows, Windmill is the platform to build, share and run them.
Key people at Windmill.
Windmill was founded in 2022 by Ruben Fiszel (Founder).
Windmill has raised $15.0M in total across 2 funding rounds.
Windmill's investors include YETI Capital.
Windmill is an open-source developer platform designed to transform scripts written in languages like Python, TypeScript, Go, Bash, and SQL into production-grade internal applications, workflows, and integrations. It enables developers to build complex, data-intensive apps, automate business logic, and orchestrate workflows with high performance and reliability. Windmill serves primarily software engineering teams and organizations looking to streamline internal operations by turning code scripts into reusable, scalable tools without heavy infrastructure overhead[2][3][4].
For an investment firm, Windmill represents a mission-driven technology company focused on empowering developers to automate and build internal tools efficiently, emphasizing open-source principles and developer-centric design. Its investment philosophy would likely center on supporting scalable, infrastructure-light platforms that enhance developer productivity and operational agility. Key sectors include developer tools, automation, workflow orchestration, and cloud infrastructure. Windmill’s impact on the startup ecosystem is significant as it lowers the barrier for companies to build and maintain internal automation, fostering innovation and operational efficiency across industries.
For a portfolio company, Windmill builds a developer-first automation and workflow platform that serves engineering teams and technical operations. It solves the problem of slow, complex, and fragmented internal tooling by providing a unified platform that converts scripts into automated workflows, APIs, and user interfaces. Windmill’s growth momentum is evidenced by adoption among companies like Pave and Investing.com, positive user reviews praising its performance and flexibility, and a roadmap focused on deeper AI integration and enterprise features[2][3][5].
Windmill was founded by Ruben, a computer scientist with a strong background including a top MSc in CS from EPFL, research on compilers at Stanford, and engineering leadership at Palantir and a Multi-Party Computation startup. The idea emerged from the need to simplify and accelerate the creation of internal tools and workflows by turning scripts into reusable, production-grade components. Early traction came from developer communities and companies adopting Windmill as a self-hosted alternative to commercial platforms like Retool, Airplane, and Pipedream, appreciating its open-source nature and performance advantages[4].
Windmill rides the growing trend of developer-first automation and internal tooling, addressing the increasing complexity and scale of modern software operations. As companies scale, the need for reliable, maintainable, and fast internal workflows becomes critical. Windmill’s timing is ideal given the rise of cloud-native architectures, serverless computing, and the demand for low-code/no-code automation that still respects developer control and customization.
Market forces favor platforms that reduce infrastructure sprawl and improve developer productivity, especially those that integrate well with existing tools and workflows. Windmill influences the ecosystem by providing an open-source alternative to proprietary platforms, encouraging transparency, extensibility, and community-driven innovation in workflow orchestration and internal app development[2][4].
Windmill is poised for continued growth as it deepens AI integration, enhances data capabilities (e.g., DuckDB support), and expands enterprise features like autoscaling and advanced monitoring. Its open-source foundation combined with a strong developer focus positions it well to capture more market share in internal tooling and automation.
Future trends shaping Windmill’s journey include the increasing adoption of AI-powered automation, the shift towards self-hosted and hybrid cloud solutions for security and compliance, and the growing complexity of business workflows requiring sophisticated yet accessible orchestration tools.
As Windmill evolves, it is likely to become a foundational platform for developer-driven automation, enabling organizations to innovate faster while maintaining control and security. This ties back to its core mission of turning scripts into powerful internal apps and workflows, democratizing automation for technical teams worldwide.
Windmill has raised $15.0M across 2 funding rounds. Most recently, it raised $5.0M Series A in October 2024.
| Date | Round | Lead Investors | Other Investors |
|---|---|---|---|
| Oct 14, 2024 | $5.0M Series A | YETI Capital | |
| Apr 11, 2022 | $10.0M Other Equity |
