YCS22· DevtoolsWindmill
Open-source platform to turn scripts into internal apps & workflows
Founders
Not read from YC yet; the weekly run fills these in.
Same space
Competitors
Closest in what they build, same category.
KeystrokeW24An all-in-one platform for building internal agents & workflowsShared: developer tools, workflow automationActive
SvixW21Enterprise ready webhooks service, open-source and in the cloudShared: developer tools, open sourceActive
BotCityW22Observability and Governance for AI-Generated Python scripts.Shared: developer tools, open sourceActive
OneCLIS26The open source AI teammates for your company.Shared: workflow automation, open sourceActive
RetoolW17Build internal tools fast.Shared: developer toolsActive
Adjacent
Overlapping tags, a different niche.
CorsairW25OpenRouter for IntegrationsShared: developer tools, workflow automation, open sourceActive
SkyvernS23Open Source AI Agent to automate browser workflows via an APIShared: workflow automation, open sourceActive
Trigger.devW23Build and deploy fully‑managed AI agents and workflowsShared: developer tools, open sourceActive
ActivepiecesS22Open-source, AI-first and no-code business automation toolShared: workflow automation, open sourceActive
FormanceS21Open Source Infrastructure for the Financial InternetShared: developer tools, open sourceActive
Also from S22 in Developer tools
Batchmates in Summer 2022.
HyperDXS22Open-source, dev-friendly observability.Acquired
MedplumS22API first electronic health record (EHR) that is open sourceActive
PayloadS22Developer-First Headless CMS and Application FrameworkAcquired
StackupS22Stackup helps businesses manage their crypto assets.Active
CodeCraftersS22Programming courses for experienced engineersActive
DittofeedS22Open-source customer engagement & messaging automationActive
About Windmill
Windmill is an open-source developer platform that turns scripts into workflows, internal tools, and full-stack apps. Write scripts in Python, TypeScript, Go, Bash, Rust, SQL - Windmill auto-generates UIs from their parameters, handles dependencies, credentials, permissions, and scheduling so you focus on business logic, not infra. Open-source alternative to Airflow, Temporal, Retool and n8n. Chain scripts into flows with branching, parallelism, retries. Build dashboards with the app builder. Trigger via cron, webhook, or UI. All-in-one runtime, editor, secret manager, and OAuth platform - enterprise-ready out of the box. Stack: Rust / TypeScript + Svelte / PostgreSQL. Self-hostable, easy to deploy, built for performance and DX.
Paris, Île-de-France, France
Windmill: questions
Which YC batch was Windmill in?
Windmill was in Y Combinator's Summer 2022 batch (S22).
Is Windmill still active?
Y Combinator lists Windmill as active.
Where is Windmill based?
Windmill lists Paris, Île-de-France, France as its location on YC's directory.
Not affiliated with Y Combinator. From YC's public directory. Logos via logo.dev; trademarks belong to their owners.