head to head · open source
conductor vs Juggle
conductor has 32,207 GitHub stars, 1,009 forks, 253 open issues and last shipped today. Juggle has 1,148 stars, 200 forks, 7 open issues and last shipped 4 days ago. conductor leads on adoption by 2,705% (32,207 vs 1,148 stars). conductor is written in Java under Apache-2.0; Juggle is written in Java under GPL-3.0. conductor has attracted 3% as many forks as stars, Juggle 17%. conductor was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (workflow-engine), 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 | Juggle | |
|---|---|---|
| GitHub stars | ★ 32K | ★ 1.1K |
| License | Apache-2.0 | GPL-3.0 |
| Written in | Java | Java |
| Last push | 2026-09-18 | 2026-09-14 |
| Forks | ⑂ 1.0K | ⑂ 200 |
| 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 Juggle if
- You want the Juggle feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches Java
- You evaluated both and Juggle 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 Juggle
Juggle 项目介绍 Juggle是一个接口编排的低代码工具，通过它可以快速将简单的API编排成一个复杂的接口，编排的接口可以直接给前端使用，极大的提高开发效率，减轻开发成本。 演示环境 Juggle官方文档地址: Juggle演示环境地址: (演示环境可以使用gitee或github登录体验) 什么时候需要Juggle 1.适合已有基础服务能力，通过Juggle进行微服务接口编排快速搭建一个新产品。 2.系统需要与第三方系统进行对接，通过Juggle直接进行编排，无需任何开发就可以完成对接。 3.适合做前端的适配层（即BFF），可以用Juggle替代常见的通过Nodejs来实现BFF层的能力。 4.适合需要面向私有化或大量定制开发的产品，通过Juggle编排定制化接口，避免对标准代码的污染。 功能特性 1.流程多版本管理，天然支持流程灰度能力 2.支持字符串，布尔，整数，小数，日期，时间，列表，对象等数据结构，满足绝大数数据定义场景 3.内置方法节点，判断节点，代码节点，赋值节点，MySql节点，并行节点，缓存节点等多种节点，能灵活设计流程 4.支持Groovy,JavaScript,Python,Java等多种脚本语言来增强流程 5.支持Http,Dubbo,WebService等协议的接口调用 6.套件市场拥有几十个常见系统的官方套件（如：通义千问，钉钉机器人，QQ邮箱，阿里云短信）等，开箱即用，大大降低流程设计…
read the full Juggle overview →
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Frequently asked questions
Is conductor or Juggle more popular?
conductor has 32,207 GitHub stars and Juggle has 1,148. conductor has the larger community by that measure.
Are conductor and Juggle free?
Both are open source. conductor is licensed under Apache-2.0 and Juggle under GPL-3.0. Neither carries a licence fee.
What is the difference between conductor and Juggle?
conductor is written in Java and Juggle in Java. 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 Juggle?
Choose conductor if you want the larger community (32,207 stars) or its Apache-2.0 licence terms. Choose Juggle if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.