head to head · open source
kafka vs Operational
kafka has 33,750 GitHub stars, 15,521 forks, 574 open issues and last shipped yesterday. Operational has 477 stars, 17 forks, 9 open issues and last shipped 2 months ago. kafka leads on adoption by 6,975% (33,750 vs 477 stars). kafka is written in Java under Apache-2.0; Operational is written in Vue under AGPL-3.0. kafka has attracted 46% as many forks as stars, Operational 4%. kafka 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
| kafka | Operational | |
|---|---|---|
| GitHub stars | ★ 34K | ★ 477 |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | Java | Vue |
| Last push | 2026-09-18 | 2026-07-26 |
| Forks | ⑂ 16K | ⑂ 17 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick kafka if
- You weight community size — 34K 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 Operational if
- You want the Operational feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Vue
- You evaluated both and Operational fits your workflow better
About kafka
Apache Kafka is an open source distributed event streaming platform, written in Java and Scala, for organizations that need high performance data pipelines, streaming analytics, data integration, and mission critical applications.
read the full kafka overview →
About Operational
Operational is an open source event tracking and notification tool for technology products. It lives in the Node.js ecosystem and is distributed as a monorepo containing a Vue 3 single page application, an Express backend, an Astro marketing website, and a shared packages folder published to npm. The runtime stack is Node.js 18 or newer, MySQL 8.x, and Prisma as the data layer, with ClickHouse supported as an optional addition. The project is licensed under AGPL 3.0 and its topics list places it in the self hosted, SaaS, PWA, and push notification space.
read the full Operational overview →
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Frequently asked questions
Is kafka or Operational more popular?
kafka has 33,750 GitHub stars and Operational has 477. kafka has the larger community by that measure.
Are kafka and Operational free?
Both are open source. kafka is licensed under Apache-2.0 and Operational under AGPL-3.0. Neither carries a licence fee.
What is the difference between kafka and Operational?
kafka is written in Java and Operational in Vue. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, kafka or Operational?
Choose kafka if you want the larger community (33,750 stars) or its Apache-2.0 licence terms. Choose Operational if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.