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Comparison · DevOps
NATS vs Rivet
A side-by-side editorial comparison of NATS and Rivet — release velocity, themes, recent moves, and the top alternatives to consider.
NATS vs Rivet: at a glance
| Feature | NATS | Rivet |
|---|---|---|
| Sector | DevOps | DevOps |
| Velocity score | 5.0 | 7.5 |
| Sparks · 30d | 0 | 2 |
| Top themes | messaging, jetstream, security-fixes, backports | actors, serverless, storage engine, s3 |
| Last editorial update | 2d ago | 3d ago |
| Website | Visit → | — |
What is NATS?
NATS 2.15.2 closes auth-callout and leafnode ACL gaps on both supported lines.
NATS shipped 2.15.2 and 2.14.9 together on Oct 26, the first patches since 2.15.1 went final. Both carry the same fixes: auth callout now respects allowed connection types, leafnode ACLs no longer implicitly allow $MQTT.> permissions, OCSP responses are bound to the certificate serial, and restored v1 snapshots are bounds-checked. Both also move to Go builds that distrust eMudhra intermediates.
What is Rivet?
Rivet 3.0 Preview runs as one stateless binary on WarpDrive, with S3 as its only dependency.
Rivet has spent two months building infrastructure for long-lived actors and AI agents: BYOC in customer clouds, OpenTelemetry tracing, actor-scoped JWTs, Pi agent runtimes and agentOS Hosted VMs. On October 5 it said 3.0 would replace NATS with S3. The October 26 3.0 Preview delivers that: a new storage engine, WarpDrive, promises bottomless storage on S3 at SSD speed, and Rivet becomes a single stateless binary.
NATS vs Rivet: editorial side-by-side
NATS
5.0DEVOPS
NATS 2.15.2 closes auth-callout and leafnode ACL gaps on both supported lines.
◆ Current state
NATS shipped 2.15.2 and 2.14.9 together on Oct 26, the first patches since 2.15.1 went final. Both carry the same fixes: auth callout now respects allowed connection types, leafnode ACLs no longer implicitly allow $MQTT.> permissions, OCSP responses are bound to the certificate serial, and restored v1 snapshots are bounds-checked. Both also move to Go builds that distrust eMudhra intermediates.
◆ Where it's heading
After 2.15's desired-state metalayer, the release stream has turned to hardening: two rounds of metalayer data-safety fixes in 2.15.1, now a batch of authorization and certificate-validation fixes. Every 2.15 patch is mirrored to 2.14, so the project is carrying two lines in parallel while 2.15 adoption grows.
◆ Prediction
Expect paired 2.15.3 / 2.14.10 candidates within a few weeks, continuing the mirrored cadence. The entries don't show when 2.14 support ends.
Rivet
7.5DEVOPS
Rivet 3.0 Preview runs as one stateless binary on WarpDrive, with S3 as its only dependency.
◆ Current state
Rivet has spent two months building infrastructure for long-lived actors and AI agents: BYOC in customer clouds, OpenTelemetry tracing, actor-scoped JWTs, Pi agent runtimes and agentOS Hosted VMs. On October 5 it said 3.0 would replace NATS with S3. The October 26 3.0 Preview delivers that: a new storage engine, WarpDrive, promises bottomless storage on S3 at SSD speed, and Rivet becomes a single stateless binary.
◆ Where it's heading
Each release removes operational burden: BYOC moved the control plane into the customer's cloud, and 3.0 reduces the self-hosted footprint to one binary plus an S3 bucket. The agent work (Pi, agentOS) sits on top as the main workload Rivet is courting.
◆ Prediction
Expect benchmarks and migration guidance for 2.x users during the preview, followed by a 3.0 GA. The entry gives no performance numbers, so the SSD-speed claim is unverified.
Alternatives to NATS and Rivet
Other DevOps products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either NATS or Rivet.
CodeRabbit
CodeRabbit moves its review status to a GitHub check run and keeps Deep Scan coverage fresh.
Apache Arrow Rust
Arrow Rust 60.1.0 ships, redacting Parquet encryption keys and adding read-ahead planning.
Zed
Zed 1.26 adds Pyrefly for Python and debugs WebAssembly from the JavaScript debugger.
Sanity
Sanity's MCP server now advertises itself to agents through a server card and llms.txt.
Kubernetes
Kubernetes moves conformance from the cluster to the workloads running on it.
Recent activity from NATS and Rivet
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 2d agoNATSNATS 2.15.2: auth callout, leafnode ACL and OCSP fixes
- 2d agoNATSNATS 2.14.9 backports 2.15.2's auth and OCSP fixes
- 3d agoRivetIntroducing Rivet 3.0 Preview ⚡
- 17d agoRivetIntroducing agentOS 0.4 & Hosted VMs
- 20d agoNATSNATS 2.15.1 ships metalayer data-safety fixes as stable
- 20d agoNATSNATS 2.14.8 backports JetStream fixes to the 2.14 line
- 22d agoRivetIntroducing Pi Durable for Rivet
- 23d agoNATS2.15.1 RC2: metalayer data-loss fixes, TLS for leafnode proxies
- 23d agoNATS2.14.8 RC2: backports 2.15.1 race and JetStream fixes
- 24d agoRivetReplacing Our Message Broker with... S3? ⚡
- 28d agoRivetIntroducing Pi 1.0 for Rivet
- 1mo agoRivetIntroducing JWT Authentication for Rivet Actors
Frequently asked questions
What is the difference between NATS and Rivet?
They serve adjacent needs but don't currently overlap on shipped themes. Rivet is currently shipping more aggressively (velocity 7.5 vs 5.0), with 2 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is NATS better than Rivet?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Rivet is currently shipping more aggressively (velocity 7.5 vs 5.0), with 2 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other DevOps products to evaluate alongside.
What are the best alternatives to NATS?
Top NATS alternatives in DevOps are ranked by recent ship velocity. Browse the "NATS alternatives" section above for the current picks, or visit /alternatives/nats for the full list with editorial commentary on each.
What are the best alternatives to Rivet?
Top Rivet alternatives in DevOps are ranked by recent ship velocity. Browse the "Rivet alternatives" section above for the current picks, or visit /alternatives/rivet for the full list with editorial commentary on each.