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Windmill
San Francisco and Paris
What it is
Windmill is an open-source workflow engine and developer platform for building endpoints, workflows, and user interfaces, including internal software for engineering, data, sales, support, and marketing teams. Developers can write scripts in TypeScript, Python, Go, PHP, Bash, C#, SQL, Rust, Ruby, and R, among other languages. The platform combines a script editor, low-code flow builder, and low-code or React and Svelte app builders. Scripts and flows can run from webhooks, schedules, HTTP routes, queues, or an open API. Its Hub lists more than 200 resource types, including GitHub, Slack, AWS, BigQuery, and PostgreSQL integrations; users can define custom types with schemas. Local development is supported through a CLI, with Git sync for version control and deployment workflows. Windmill supports self-hosting. The free plan includes 3 workspaces, 50 users, 10 GiB of workspace object storage, and 100 guest app users per 30 days. Enterprise starts at $120 a month, and a month-long Enterprise trial is available.
For and against
For
- Free plan includes 3 workspaces and 50 users.
- Supports scripts in multiple programming languages.
- More than 200 resource types listed on its Hub.
- Supports self-hosting and Git sync.
Against
- Enterprise starts at $120 a month.
- Free plan limits guest app users to 100 per 30 days.
- PID namespace isolation is disabled by default.
- NSJAIL sandboxing is optional.
The verdict
Windmill combines script-based development, low-code builders, and workflow triggers in one platform, with a free plan and self-hosted option. Teams considering Enterprise should account for its starting price and review the documented isolation settings.
Who it suits
Windmill suits teams building internal tools and workflows, from developers who want to script in several languages to teams using low-code builders. It also offers self-hosted deployment for teams that want that option.
Plans and prices
Free and Open-source
Unlimited executions · 3 workspaces · 50 users · 100 app guests per 30 days
Read 15 Oct 2026 · windmill.dev
Enterprise
Audit logs · SAML/SCIM · unlimited SSO · commercial licence
Read 15 Oct 2026 · windmill.dev
Enterprise example configuration
1 developer · $20/mo per additional developer · $10/mo per operator · first 100 guests free
Read 15 Oct 2026 · windmill.dev
On the record
- API and SDK
- Windmill exposes an API and a TypeScript SDK with services for jobs, scripts, flows, resources, variables, schedules, workers, users and workspaces.app.windmill.dev · read 15 Oct 2026
- Builders
- The platform includes a script editor, a low-code flow builder, and low-code and React or Svelte app builders.windmill.dev · read 2 Oct 2026
- Changelog update
- The June 2026 changelog added automatic Git-to-Windmill deployment, pull-request creation and deployment status checks.windmill.dev · read 15 Oct 2026
- CLI
- The wmill CLI supports listing, retrieving and creating scripts, flows, apps, resources, variables, schedules, folders and triggers as a shell API client.windmill.dev · read 15 Oct 2026
- Cloud hosting region
- Windmill Cloud is hosted in the United States, with dedicated European Union instances available to Cloud Enterprise customers.windmill.dev · read 15 Oct 2026
- Community feedback
- A Reddit discussion praised the Jenkins-and-Retool combination and self-hosting but called the UX messy and said Windmill is better suited to internal tools than CI.reddit.com · read 15 Oct 2026
- Company
- Windmill says it was founded in 2022 and is based between San Francisco and Paris.windmill.dev · read 2 Oct 2026
- Company founder and investors
- Crunchbase lists Ruben Fiszel as founder and identifies Y Combinator among three investors in one pre-seed round.crunchbase.com · read 15 Oct 2026
- Company legal name
- Crunchbase lists the legal entity as Windmill Labs, Inc.crunchbase.com · read 15 Oct 2026
- Company profile
- LinkedIn lists Windmill as privately held, founded in 2022, headquartered in Dover and employing 11–50 people.linkedin.com · read 15 Oct 2026
- Custom integrations
- Users can define their own resource types with JSON schemas and publish verified types to Windmill Hub.windmill.dev · read 15 Oct 2026
- Deployment environments
- Official deployment guides cover AWS, GCP, Azure, Hetzner, Fly.io, Render, DigitalOcean and other Docker or Kubernetes environments.windmill.dev · read 15 Oct 2026
- Development and deployment
- Windmill supports local development with its CLI and Git sync for version control and deployment workflows.windmill.dev · read 2 Oct 2026
- Documentation depth
- Documentation covers scripts, flows, apps, local development, CLI, SDKs, integrations, deployment, authentication, security and operations.windmill.dev · read 15 Oct 2026
- Enterprise compliance
- The Enterprise plan lists SAML/SCIM, external secret backends, audit logs, OpenTelemetry, Prometheus metrics and a SOC 2 Type II report.windmill.dev · read 15 Oct 2026
- Flow editor
- Flows compose scripts into workflows with branches, loops, approvals and retries.windmill.dev · read 15 Oct 2026
- Full-code apps
- Full-code apps use React or Svelte frontends connected to Windmill backend runnables.windmill.dev · read 15 Oct 2026
- Integrations
- Windmill Hub lists more than 200 resource types, including Google services, GitHub, GitLab, Slack, Microsoft Teams, AWS, S3, BigQuery, ClickHouse, Datadog and Discord.windmill.dev · read 15 Oct 2026
