compare
Fluvio vs NATS
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | Fluvio | NATS |
|---|---|---|
| Language | Rust | Go |
| Licence | Apache-2.0 | Apache-2.0 |
| Stars | 5.3k | 21k |
| Latest | v0.18.1 | v2.15.0 |
| Last push | 2026-08-30 | 2026-10-06 |
| Release cadence | too few releases | too few releases |
| Active contributors | 0 commit authors on the default branch in the last 90 days | 33+ commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
Both replace Apache Kafka. Alternatives to Apache Kafka →
PartialFluvioStreaming in Rust with WebAssembly transforms, with its own protocol and clients.
PartialNATSDurable streams with JetStream, without Kafka's protocol.
Fluvio
- dev2026-05-14Published artifacts from the latest buildpre-release
- v0.18.12025-07-04
- v0.18.1-dev-42025-06-30pre-release
- v0.18.1-dev-22025-06-24pre-release
- v0.18.1-dev-12025-06-19pre-release
NATS
- v2.14.8-RC.22026-10-06Release v2.14.8-RC.2pre-release
- v2.15.1-RC.22026-10-06Release v2.15.1-RC.2pre-release
- v2.14.8-RC.12026-09-28Release v2.14.8-RC.1pre-release
- v2.15.1-RC.12026-09-28Release v2.15.1-RC.1pre-release
- v2.15.02026-09-17Release v2.15.0
Fluvio
✓ signed The latest release, v0.18.1, carries a signature GitHub verified.
Loading the security report
NATS
✓ signed The latest release, v2.15.0, carries a signature GitHub verified.
Loading the security report