head to head · open source
Windmill vs yao-meta-skill
Windmill has 17,982 GitHub stars, 1,097 forks, 852 open issues and last shipped today. yao-meta-skill has 2,625 stars, 243 forks, 2 open issues and last shipped 1 months ago. Windmill leads on adoption by 585% (17,982 vs 2,625 stars). Windmill is written in Rust under a custom or non-standard licence; yao-meta-skill is written in Python under MIT. Windmill has attracted 6% as many forks as stars, yao-meta-skill 9%. Windmill was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | yao-meta-skill | |
|---|---|---|
| GitHub stars | ★ 18K | ★ 2.6K |
| License | Custom / other | MIT |
| Written in | Rust | Python |
| Last push | 2026-09-20 | 2026-08-17 |
| Forks | ⑂ 1.1K | ⑂ 243 |
| 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 yao-meta-skill if
- You want the yao-meta-skill feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and yao-meta-skill 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 yao-meta-skill
yao meta skill is a Python, MIT licensed system for creating, evaluating, packaging, and governing reusable agent skills, and it is aimed at teams that build, ship, and maintain agent workflows rather than at people writing one off prompts.
read the full yao-meta-skill overview →
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Frequently asked questions
Is Windmill or yao-meta-skill more popular?
Windmill has 17,982 GitHub stars and yao-meta-skill has 2,625. Windmill has the larger community by that measure.
Are Windmill and yao-meta-skill free?
Both are open source. Windmill has no licence declared in this registry, and yao-meta-skill is licensed under MIT. Both are free to self-host.
What is the difference between Windmill and yao-meta-skill?
Windmill is written in Rust and yao-meta-skill in Python. 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 yao-meta-skill?
Choose Windmill if you want the larger community (17,982 stars) or its Custom / other licence terms. Choose yao-meta-skill if its feature set, stack or MIT licence fits better. Both are self-hostable.