head to head · open source
xxl-job vs nextflow
xxl-job has 30,562 GitHub stars, 11,486 forks, 79 open issues and last shipped 2 months ago. nextflow has 3,487 stars, 811 forks, 422 open issues and last shipped yesterday. xxl-job leads on adoption by 776% (30,562 vs 3,487 stars). xxl-job is written in Java under GPL-3.0; nextflow is written in Groovy under Apache-2.0. xxl-job has attracted 38% as many forks as stars, nextflow 23%. nextflow 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
| xxl-job | nextflow | |
|---|---|---|
| GitHub stars | ★ 31K | ★ 3.5K |
| License | GPL-3.0 | Apache-2.0 |
| Written in | Java | Groovy |
| Last push | 2026-07-21 | 2026-09-17 |
| Forks | ⑂ 11K | ⑂ 811 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick xxl-job if
- You weight community size — 31K stars and counting
- You want the GPL-3.0 license terms
- Your stack matches Java
- You value the larger contributor base for long-term maintenance
pick nextflow if
- You want the nextflow feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Groovy
- You evaluated both and nextflow fits your workflow better
About xxl-job
XXL JOB is a distributed task scheduling framework written in Java and released under the GPL 3.0 licence, built for teams that need scheduled jobs to run reliably across a cluster of machines rather than inside a single application process.
read the full xxl-job overview →
About nextflow
Nextflow is an open source workflow system for scalable, portable, and reproducible computational pipelines. It is written in Groovy, released under Apache 2.0, and built around a domain specific language for data driven workflows. The project lives in the infrastructure and operations ecosystem, especially orchestration and scheduling, and its topics include bioinformatics, cloud, Docker, high performance computing, and reproducible research.
read the full nextflow overview →
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Frequently asked questions
Is xxl-job or nextflow more popular?
xxl-job has 30,562 GitHub stars and nextflow has 3,487. xxl-job has the larger community by that measure.
Are xxl-job and nextflow free?
Both are open source. xxl-job is licensed under GPL-3.0 and nextflow under Apache-2.0. Neither carries a licence fee.
What is the difference between xxl-job and nextflow?
xxl-job is written in Java and nextflow in Groovy. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, xxl-job or nextflow?
Choose xxl-job if you want the larger community (30,562 stars) or its GPL-3.0 licence terms. Choose nextflow if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.