head to head · open source
Windmill vs superplane
Windmill has 18,370 GitHub stars, 1,135 forks, 852 open issues and last shipped yesterday. superplane has 8,766 stars, 690 forks, 617 open issues and last shipped yesterday. Windmill leads on adoption by 110% (18,370 vs 8,766 stars). Windmill is written in Rust under a custom or non-standard licence; superplane is written in Go under a custom or non-standard licence. Windmill has attracted 6% as many forks as stars, superplane 8%. superplane was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (ai-agents, self-hosted), 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 | superplane | |
|---|---|---|
| GitHub stars | ★ 18K | ★ 8.8K |
| License | Custom / other | Custom / other |
| Written in | Rust | Go |
| Last push | 2026-11-04 | 2026-11-04 |
| Forks | ⑂ 1.1K | ⑂ 690 |
| 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 superplane if
- You want the superplane feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches Go
- You evaluated both and superplane fits your workflow better
About Windmill
Open source developer platform for internal code: APIs, background jobs, workflows and UIs. Self hostable alternative to Retool, Pipedream, Superblocks and a simplified Temporal with autogenerated UIs and custom UIs to trigger workflows and scripts as internal apps. Scripts are turned into sharable UIs automatically, and can be composed together into flows or used into richer apps built with low code. Supported languages: Python, TypeScript, Go, Bash, SQL, GraphQL, PowerShell, Rust, and more. Try it Website Docs Discord Hub Contributing Windmill Developer platform for APIs, background jobs, workflows and UIs…
read the full Windmill overview →
About superplane
Website · Docs · Discord · Blog · Event [!NOTE] SuperPlane is in beta. We are building the Open source factory for one shot engineering . Follow the latest releases, explore open issues and see how you can contribute as the SuperPlane matures. About Open source factory for one shot engineering. SuperPlane turns high confidence backlog issues into verified, review ready pull requests so engineers can focus on work that needs judgment. SuperPlane lets AI agents fully automate routine development work. It coordinates coding agents, source control, CI, review, approvals and feedback in one visible system so…
read the full superplane overview →
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Frequently asked questions
Is Windmill or superplane more popular?
Windmill has 18,370 GitHub stars and superplane has 8,766. Windmill has the larger community by that measure.
Are Windmill and superplane free?
Neither Windmill nor superplane 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 superplane?
Windmill is written in Rust and superplane in Go. 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 superplane?
Choose Windmill if you want the larger community (18,370 stars) or its Custom / other licence terms. Choose superplane if its feature set, stack or Custom / other licence fits better. Both are self-hostable.