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Comparison · DevOps
FusionAuth vs Rivet
A side-by-side editorial comparison of FusionAuth and Rivet — release velocity, themes, recent moves, and the top alternatives to consider.
FusionAuth vs Rivet: at a glance
| Feature | FusionAuth | Rivet |
|---|---|---|
| Sector | DevOps | DevOps |
| Velocity score | 2.5 | 7.5 |
| Sparks · 30d | 0 | 3 |
| Top themes | authentication, identity, oauth, security | actors, ai agents, sqlite, forking |
| Last editorial update | 2mo ago | 2d ago |
| Website | Visit → | — |
What is FusionAuth?
FusionAuth adds RFC 8707 resource-scoped tokens while most recent changelogs surface only upgrade boilerplate.
FusionAuth's changelog data is thinly populated — most entries show only the standard upgrade recommendation with no detailed content. The substantive releases are 1.67.0 (RFC 8707 resource indicators for OAuth tokens, enabling per-resource audience scoping in the `aud` claim) and 1.66.0 (webhook endpoint security hardening requiring global API keys, a breaking change). FusionAuth is an open-source, self-hosted identity platform in consistent quarterly release cadence.
What is Rivet?
Rivet Actors can now fork in 20 ms, SQLite database included, without copying data.
Rivet builds infrastructure for long-lived actors and AI agents: BYOC, OpenTelemetry tracing, actor-scoped JWTs and agentOS Hosted VMs. The 3.0 Preview made Rivet a single stateless binary on S3, and the Rust SDK reached general availability on 6 November. On 11 November Rivet added actor forking: a fork starts in 20 ms with the original actor's state and SQLite database and costs nothing until it writes.
FusionAuth vs Rivet: editorial side-by-side
FusionAuth
2.5DEVOPS
FusionAuth adds RFC 8707 resource-scoped tokens while most recent changelogs surface only upgrade boilerplate.
◆ Current state
FusionAuth's changelog data is thinly populated — most entries show only the standard upgrade recommendation with no detailed content. The substantive releases are 1.67.0 (RFC 8707 resource indicators for OAuth tokens, enabling per-resource audience scoping in the `aud` claim) and 1.66.0 (webhook endpoint security hardening requiring global API keys, a breaking change). FusionAuth is an open-source, self-hosted identity platform in consistent quarterly release cadence.
◆ Where it's heading
RFC 8707 implementation and the webhook endpoint security hardening both point toward a standards-compliance and security posture focus rather than surface feature expansion. The breaking change in 1.66.0 prioritizing security correctness over backward compatibility signals a product that prioritizes operational security for self-hosters. Version naming with code names (Intelligent Kamfa, Tenant Manager SSO Tasmanian Mountain Skink) is purely cosmetic.
◆ Prediction
Standards compliance is the clearest trajectory — RFC implementations tend to cluster. FAPI 2.0 or OAuth 2.0 Rich Authorization Requests are likely candidates given the resource-scoping direction in RFC 8707.
Rivet
7.5DEVOPS
Rivet Actors can now fork in 20 ms, SQLite database included, without copying data.
◆ Current state
Rivet builds infrastructure for long-lived actors and AI agents: BYOC, OpenTelemetry tracing, actor-scoped JWTs and agentOS Hosted VMs. The 3.0 Preview made Rivet a single stateless binary on S3, and the Rust SDK reached general availability on 6 November. On 11 November Rivet added actor forking: a fork starts in 20 ms with the original actor's state and SQLite database and costs nothing until it writes.
◆ Where it's heading
Rivet keeps turning its S3-backed storage engine into features for agent workloads. Copy-on-write forking follows from the 3.0 storage design and gives agents a cheap way to branch a session, try something and discard it. The SDK and auth work of the past two months points to Rivet positioning actors as the runtime for agent backends.
◆ Prediction
Forking is likely to show up next in agentOS and the Pi integrations as a way to branch agent runs; the entries do not say when 3.0 leaves preview.
Alternatives to FusionAuth 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 FusionAuth or Rivet.
Appsmith
Appsmith 2.7 makes its MCP agent ask before deleting widgets and blocks stale edits.
Apache Arrow Rust
Arrow Rust cuts release candidates on three older lines at once.
Sanity
Sanity's MCP server now explains failed validations and stops skipping them.
GitHub
GitHub sets a December 8 cutoff for ARM32 Actions runners and opens AI Scan to the API.
Manticore Search
Manticore keeps patching 31.x, now fixing a FREEZE crash and a DocID ordering bug.
See all FusionAuth alternatives → · See all Rivet alternatives →
Recent activity from FusionAuth and Rivet
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 2d agoRivetIntroducing OpenOrange: Run Cloudflare Workers Anywhere ⚡
- 3d agoRivetIntroducing Actor Forking for SQLite ⚡
- 8d agoRivetRust SDK for Rivet Actors Is Now Generally Available
- 19d agoRivetIntroducing Rivet 3.0 Preview ⚡
- 1mo agoRivetIntroducing agentOS 0.4 & Hosted VMs
- 1mo agoRivetIntroducing Pi Durable for Rivet
- 2mo agoFusionAuthFusionAuth 1.69.1
- 3mo agoFusionAuthFusionAuth 1.69.0
- 4mo agoFusionAuthFusionAuth 1.68.0
- 5mo agoFusionAuthFusionAuth 1.67.1
- 5mo agoFusionAuthFusionAuth 1.67.0: RFC 8707 resource scoping for tokens
- 6mo agoFusionAuthFusionAuth 1.66.0: webhook endpoints require global API key
Frequently asked questions
What is the difference between FusionAuth 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 3 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 FusionAuth 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 3 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 FusionAuth?
Top FusionAuth alternatives in DevOps are ranked by recent ship velocity. Browse the "FusionAuth alternatives" section above for the current picks, or visit /alternatives/fusionauth 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.