head to head · open source
Windmill vs Automatisch
Windmill has 17,982 GitHub stars, 1,097 forks, 852 open issues and last shipped today. Automatisch has 13,975 stars, 1,064 forks, 287 open issues and last shipped 7 months ago. Windmill leads on adoption by 29% (17,982 vs 13,975 stars). Windmill is written in Rust under a custom or non-standard licence; Automatisch is written in JavaScript under a custom or non-standard licence. Windmill has attracted 6% as many forks as stars, Automatisch 8%. Windmill was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (low-code, open-source), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Windmill | Automatisch | |
|---|---|---|
| GitHub stars | ★ 18K | ★ 14K |
| License | Custom / other | Custom / other |
| Written in | Rust | JavaScript |
| Last push | 2026-09-20 | 2026-02-11 |
| Forks | ⑂ 1.1K | ⑂ 1.1K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Windmill if
- You weight community size — 18K stars and counting
- You want the Custom / other license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick Automatisch if
- You want the Automatisch feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches JavaScript
- You evaluated both and Automatisch fits your workflow better
About Windmill
Windmill is an open source developer platform for internal code, including APIs, background jobs, workflows, and UIs. It lives in the self hostable low code automation ecosystem and supports Python, TypeScript, Go, Bash, SQL, GraphQL, PowerShell, Rust, and more. The project is positioned as an open source alternative to Zapier and, in the README, to Retool, Pipedream, Superblocks, and a simplified Temporal.
read the full Windmill overview →
About Automatisch
Automatisch is an open source integration platform for workflow automation, positioned as an alternative to Zapier. It lives in the JavaScript, low code, no code, self hosted, and automation ecosystem, and it is categorized under Productivity & Utilities / Automation. The project lets users connect services such as Twitter and Slack so that business processes can be automated without writing code.
read the full Automatisch overview →
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Frequently asked questions
Is Windmill or Automatisch more popular?
Windmill has 17,982 GitHub stars and Automatisch has 13,975. Windmill has the larger community by that measure.
Are Windmill and Automatisch free?
Neither Windmill nor Automatisch declares a licence in this registry, so check each project's own repository before relying on either for a commercial use. Both are free to self-host.
What is the difference between Windmill and Automatisch?
Windmill is written in Rust and Automatisch in JavaScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Windmill or Automatisch?
Choose Windmill if you want the larger community (17,982 stars) or its Custom / other licence terms. Choose Automatisch if its feature set, stack or Custom / other licence fits better. Both are self-hostable.