head to head · open source
conductor vs bree
conductor has 32,401 GitHub stars, 1,051 forks, 253 open issues and last shipped yesterday. bree has 3,297 stars, 91 forks, 29 open issues and last shipped 9 months ago. conductor leads on adoption by 883% (32,401 vs 3,297 stars). conductor is written in Java under Apache-2.0; bree is written in JavaScript under MIT. conductor has attracted 3% as many forks as stars, bree 3%. conductor 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
| conductor | bree | |
|---|---|---|
| GitHub stars | ★ 32K | ★ 3.3K |
| License | Apache-2.0 | MIT |
| Written in | Java | JavaScript |
| Last push | 2026-11-02 | 2026-02-17 |
| Forks | ⑂ 1.1K | ⑂ 91 |
| 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 bree if
- You want the bree feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and bree fits your workflow better
About conductor
Conductor Durable Execution for Workflows and Agents Build agents that adapt. Run graphs that endure. Conductor is an open source durable execution platform for microservices, AI agents, and adaptive workflow graphs. It turns runtime choices—loops, branching, fan out, tool calls, approvals, retries, and cancellation—into durable, inspectable execution. It originated at Netflix and is actively maintained by Orkes and the community. Get Running in 60 Seconds Prerequisites: Node.js v16+ and Java 21+ must be installed. Open — your server is running with the built in ui next UI. Upgrading from a previous version? The…
read the full conductor overview →
About bree
Bree is the best job scheduler for Node.js and JavaScript with cron , dates , ms , later , and human friendly support. Works in Node v12.17.0+, uses worker threads (Node.js) to spawn sandboxed processes, and supports async/await , retries , throttling , concurrency , and cancelable jobs with graceful shutdown . Simple, fast, and lightweight. Made for Forward Email and Lad . Table of Contents Foreword Install Upgrading Usage and Examples ECMAScript modules (ESM) CommonJS (CJS) Instance Options Job Options Job Interval and Timeout Values Listening for events Custom error/message handling Cancellation, Retries…
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Frequently asked questions
Is conductor or bree more popular?
conductor has 32,401 GitHub stars and bree has 3,297. conductor has the larger community by that measure.
Are conductor and bree free?
Both are open source. conductor is licensed under Apache-2.0 and bree under MIT. Neither carries a licence fee.
What is the difference between conductor and bree?
conductor is written in Java and bree 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, conductor or bree?
Choose conductor if you want the larger community (32,401 stars) or its Apache-2.0 licence terms. Choose bree if its feature set, stack or MIT licence fits better. Both are self-hostable.