head to head · open source
conductor vs moon
conductor has 32,207 GitHub stars, 1,010 forks, 253 open issues and last shipped yesterday. moon has 4,105 stars, 252 forks, 99 open issues and last shipped yesterday. conductor leads on adoption by 685% (32,207 vs 4,105 stars). conductor is written in Java under Apache-2.0; moon is written in Rust under MIT. conductor has attracted 3% as many forks as stars, moon 6%. conductor was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (javascript), 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
| conductor | moon | |
|---|---|---|
| GitHub stars | ★ 32K | ★ 4.1K |
| License | Apache-2.0 | MIT |
| Written in | Java | Rust |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 1.0K | ⑂ 252 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick conductor if
- You weight community size — 32K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Java
- You value the larger contributor base for long-term maintenance
pick moon if
- You want the moon feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Rust
- You evaluated both and moon fits your workflow better
About conductor
Conductor is an Apache 2.0 licensed, event driven agentic workflow engine written in Java that provides durable and highly resilient execution for applications and AI agents, aimed at teams running microservices, AI agents, and adaptive workflow graphs that need orchestration they can version, inspect, and recover.
read the full conductor overview →
About moon
moon is a repository management, organization, orchestration, and notification tool for the web ecosystem, written in Rust under the MIT license. It is a build system and monorepo management tool whose concepts are heavily inspired by Bazel and other build systems. The project is associated with build system, monorepo tooling, ci cd, Node.js, JavaScript, Bun, Deno, Go, Python, and Ruby topics.
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Frequently asked questions
Is conductor or moon more popular?
conductor has 32,207 GitHub stars and moon has 4,105. conductor has the larger community by that measure.
Are conductor and moon free?
Both are open source. conductor is licensed under Apache-2.0 and moon under MIT. Neither carries a licence fee.
What is the difference between conductor and moon?
conductor is written in Java and moon in Rust. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, conductor or moon?
Choose conductor if you want the larger community (32,207 stars) or its Apache-2.0 licence terms. Choose moon if its feature set, stack or MIT licence fits better. Both are self-hostable.