Kestra vs Windmill
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| Field | K KestraApache-2.0 event-driven orchestration with YAML flows and a clean UI. | W WindmillDeveloper-first workflows as scripts, flows, and apps. |
|---|---|---|
| Fit. | ||
| Platforms· | Linux, macOS, Windows, Docker | Linux, Docker |
| Docker | Yes | Yes |
| Commercial· | yes | uncertain |
| Catalog. | ||
| Category | Automation | Automation |
| License· | Apache 2.0 | AGPL-3.0 |
| Language· | Java | Rust |
| Jobs· | workflow automation, self-hosted workflows, Zapier alternative | workflow automation, internal tools, script runners |
| Activity. | ||
| Stars· | 28k | 15k |
| Last commit· | Sep 11, 2026 | Sep 7, 2026 |
| Last release· | — | Sep 1, 2026 |
| Links | ProjectGitHubGuide | ProjectGitHubGuide |