head to head · open source
Archon vs flowable-engine
Archon has 23,505 GitHub stars, 3,474 forks, 321 open issues and last shipped 2 days ago. flowable-engine has 9,542 stars, 2,890 forks, 411 open issues and last shipped 3 days ago. Archon leads on adoption by 146% (23,505 vs 9,542 stars). Archon is written in TypeScript under MIT; flowable-engine is written in Java under Apache-2.0. Archon has attracted 15% as many forks as stars, flowable-engine 30%. Archon 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
| Archon | flowable-engine | |
|---|---|---|
| GitHub stars | ★ 24K | ★ 9.5K |
| License | MIT | Apache-2.0 |
| Written in | TypeScript | Java |
| Last push | 2026-09-18 | 2026-09-17 |
| Forks | ⑂ 3.5K | ⑂ 2.9K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Archon if
- You weight community size — 24K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick flowable-engine if
- You want the flowable-engine feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Java
- You evaluated both and flowable-engine fits your workflow better
About Archon
Archon is an open source workflow engine for AI coding agents, written in TypeScript and released under the MIT license. It lives in the AI coding ecosystem, alongside tools such as Claude Code, and is distributed through the Bun runtime and the GitHub CLI. The project describes itself as a harness builder: it lets a developer encode a development process as a YAML workflow and then run that workflow reliably across projects. Workflows are stored in a .archon/workflows/ directory and committed to the repository, so the same definition can be invoked from the CLI, a web UI, Slack, Telegram, or GitHub.…
read the full Archon overview →
About flowable-engine
Flowable is an open source workflow and Business Process Management platform written in Java and distributed under the Apache 2.0 license. It bundles three engines in one project: a BPMN process engine, a CMMN case engine, and a DMN rule engine. The project lives in the Java ecosystem, integrates with Spring, and exposes both a Java API and a REST API for orchestrating human or system activities.
read the full flowable-engine overview →
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Frequently asked questions
Is Archon or flowable-engine more popular?
Archon has 23,505 GitHub stars and flowable-engine has 9,542. Archon has the larger community by that measure.
Are Archon and flowable-engine free?
Both are open source. Archon is licensed under MIT and flowable-engine under Apache-2.0. Neither carries a licence fee.
What is the difference between Archon and flowable-engine?
Archon is written in TypeScript and flowable-engine 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, Archon or flowable-engine?
Choose Archon if you want the larger community (23,505 stars) or its MIT licence terms. Choose flowable-engine if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.