Apache KafkavsUnison
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| Apache Kafka | Unison | |
|---|---|---|
| Score | 83/100 | 65/100 |
| Rank in category | #1 of 12 in Message Broker | #2 of 15 in File Sync |
| GitHub stars | 34 152 | 5 559 |
| Stars, last 30 days | +327 | +65 |
| Stable releases, 12 months | 0 | 2 |
| Latest release | — | v2.54.0 · 1 May 2026 |
| Setup | Advanced | Moderate |
| Official Docker image | Yes | No |
| License | Apache-2.0 | GPL-3.0 |
| Main language | Java | OCaml |
Which one should you pick?
Apache Kafka scores 83/100 against 65/100 for Unison, so it is the safer default.
Unison ships more often: 2 stable releases in the past year, against 0 for Apache Kafka.
If you want the quickest setup, Unison is easier to run; Apache Kafka needs more configuration.
Apache Kafka is growing faster right now (+327 stars in 30 days).
Apache Kafka details →Unison details →