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Comparison · DevOps

Rivet vs SimpleSAMLphp

A side-by-side editorial comparison of Rivet and SimpleSAMLphp — release velocity, themes, recent moves, and the top alternatives to consider.

Rivet vs SimpleSAMLphp: at a glance

FeatureRivetSimpleSAMLphp
SectorDevOpsDevOps
Velocity score7.55.0
Sparks · 30d30
Top themesactors, ai agents, sqlite, forkingsaml, identity, security-releases, maintenance
Last editorial update2d ago4d ago
Website—Visit →

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.

Read the full Rivet trajectory →

What is SimpleSAMLphp?

SimpleSAMLphp patches both maintenance branches again, with no word on what was fixed

SimpleSAMLphp maintains parallel 2.4 and 2.5 branches and patches both when a fix lands. On 9 November it released 2.5.4 and 2.4.11 minutes apart, both labelled security releases, after a quiet two months since the 2.4.10 bugfix in August. As before, the release bodies point to the changelog and upgrade notes but describe nothing themselves.

Read the full SimpleSAMLphp trajectory →

Rivet vs SimpleSAMLphp: editorial side-by-side

R
Rivet
DEVOPS
7.5

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.

S5.0

SimpleSAMLphp patches both maintenance branches again, with no word on what was fixed

◆ Current state

SimpleSAMLphp maintains parallel 2.4 and 2.5 branches and patches both when a fix lands. On 9 November it released 2.5.4 and 2.4.11 minutes apart, both labelled security releases, after a quiet two months since the 2.4.10 bugfix in August. As before, the release bodies point to the changelog and upgrade notes but describe nothing themselves.

◆ Where it's heading

Security fixes keep arriving as paired drops across both branches, which means 2.4 is still supported. The feed tells operators when to patch but never what was exposed.

◆ Prediction

Further fixes will likely ship as paired 2.4/2.5 releases again; when 2.4 support ends is not visible in these entries.

Alternatives to Rivet and SimpleSAMLphp

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 Rivet or SimpleSAMLphp.

See all Rivet alternatives → · See all SimpleSAMLphp alternatives →

Recent activity from Rivet and SimpleSAMLphp

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 2d agoRivetIntroducing OpenOrange: Run Cloudflare Workers Anywhere ⚡
  2. 3d agoRivetIntroducing Actor Forking for SQLite ⚡
  3. 4d agoSimpleSAMLphp2.4.11 security release on the older maintenance branch
  4. 4d agoSimpleSAMLphp2.5.4 security release on the current branch
  5. 8d agoRivetRust SDK for Rivet Actors Is Now Generally Available
  6. 19d agoRivetIntroducing Rivet 3.0 Preview ⚡
  7. 1mo agoRivetIntroducing agentOS 0.4 & Hosted VMs
  8. 1mo agoRivetIntroducing Pi Durable for Rivet
  9. 2mo agoSimpleSAMLphpBugfix release on the 2.4 maintenance branch
  10. 3mo agoSimpleSAMLphpSecurity release on the 2.5 branch (re-tagged)
  11. 3mo agoSimpleSAMLphpSecurity release on the 2.5 branch
  12. 3mo agoSimpleSAMLphpBugfix release on the 2.4 maintenance branch

Frequently asked questions

What is the difference between Rivet and SimpleSAMLphp?

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 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 Rivet better than SimpleSAMLphp?

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 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 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.

What are the best alternatives to SimpleSAMLphp?

Top SimpleSAMLphp alternatives in DevOps are ranked by recent ship velocity. Browse the "SimpleSAMLphp alternatives" section above for the current picks, or visit /alternatives/simplesamlphp for the full list with editorial commentary on each.