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Comparison · DevOps
Fiber vs Rivet
A side-by-side editorial comparison of Fiber and Rivet — release velocity, themes, recent moves, and the top alternatives to consider.
Fiber vs Rivet: at a glance
| Feature | Fiber | Rivet |
|---|---|---|
| Sector | DevOps | DevOps |
| Velocity score | 2.5 | 7.5 |
| Sparks · 30d | 0 | 2 |
| Top themes | go, web-framework, net-http-compat, release-candidate | actors, serverless, storage engine, s3 |
| Last editorial update | 2mo ago | 3d ago |
| Website | Visit → | — |
What is Fiber?
Fiber v3 has sat in release candidate for months while v2 gets one-line patches
The feed carries two lines that barely touch. Fiber v2 receives narrow maintenance releases — a lock cleanup, an X-Real-IP backport, an HTML escaping fix, a CVE patch — most containing a single merged PR. The v3 line, last visible here at rc.3, is where the actual work is: native net/http and fasthttp handler support, Express-style request and response handlers, HostClient and LBClient in the client package.
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.
Fiber vs Rivet: editorial side-by-side
Fiber
2.5DEVOPS
Fiber v3 has sat in release candidate for months while v2 gets one-line patches
◆ Current state
The feed carries two lines that barely touch. Fiber v2 receives narrow maintenance releases — a lock cleanup, an X-Real-IP backport, an HTML escaping fix, a CVE patch — most containing a single merged PR. The v3 line, last visible here at rc.3, is where the actual work is: native net/http and fasthttp handler support, Express-style request and response handlers, HostClient and LBClient in the client package.
◆ Where it's heading
v3 is the answer to Fiber's longest-standing objection, that building on fasthttp cuts a project off from the net/http middleware ecosystem. Making both handler styles native reframes Fiber as compatible rather than separate. But rc.3 dates to late 2025 and nothing newer has landed in this feed, while v2 patches keep arriving through August — a long release candidate stretch that leaves users choosing between a stable branch in pure maintenance and a v3 that has not been declared final.
◆ Prediction
The next meaningful entry is either a v3.0.0 final or a further RC; until one lands, expect the v2 line to continue receiving single-PR backports and security patches.
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 Fiber 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 Fiber 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 Fiber and Rivet
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 3d agoRivetIntroducing Rivet 3.0 Preview ⚡
- 17d agoRivetIntroducing agentOS 0.4 & Hosted VMs
- 22d agoRivetIntroducing Pi Durable for Rivet
- 24d agoRivetReplacing Our Message Broker with... S3? ⚡
- 28d agoRivetIntroducing Pi 1.0 for Rivet
- 1mo agoRivetIntroducing JWT Authentication for Rivet Actors
- 2mo agoFiberIdempotency middleware releases MemoryLock keys on unlock
- 3mo agoFiberX-Real-IP overwrite fix backported to v2
- 6mo agoFiberCtx.Format now escapes HTML output
- 8mo agoFiberSecurity patch for GHSA-mrq8-rjmw-wpq3
- 9mo agoFiberMount improvements and limiter middleware fixes
- 11mo agoFiberv3 RC adds native net/http and Express-style handlers ⚡
Frequently asked questions
What is the difference between Fiber and Rivet?
They serve adjacent needs but don't currently overlap on shipped themes. Rivet is currently shipping more aggressively (velocity 7.5 vs 2.5), 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 Fiber 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 2.5), 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 Fiber?
Top Fiber alternatives in DevOps are ranked by recent ship velocity. Browse the "Fiber alternatives" section above for the current picks, or visit /alternatives/fiber 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.