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Comparison · DevOps

Rivet vs WildFly

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

Rivet vs WildFly: at a glance

FeatureRivetWildFly
SectorDevOpsDevOps
Velocity score7.55.0
Sparks · 30d30
Top themesactors, ai agents, sqlite, forkingjakarta ee, application server, virtual threads, clustering
Last editorial update2d ago12d 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 WildFly?

WildFly 42 brings virtual threads to Jakarta Concurrency.

WildFly is a Jakarta EE application server on a regular train of Beta, Final and patch releases. WildFly 42.0.0.Final (October 22) supports virtual threads in the Jakarta Concurrency 3.1 implementation, promotes idle time-based eviction for distributable sessions, SFSBs and timers to default stability, and adds automatic meter management for resources added at runtime. 41.0.1 in August was a security patch closing three IIOP CVEs.

Read the full WildFly trajectory →

Rivet vs WildFly: 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.

W
WildFly
DEVOPS
5.0

WildFly 42 brings virtual threads to Jakarta Concurrency.

◆ Current state

WildFly is a Jakarta EE application server on a regular train of Beta, Final and patch releases. WildFly 42.0.0.Final (October 22) supports virtual threads in the Jakarta Concurrency 3.1 implementation, promotes idle time-based eviction for distributable sessions, SFSBs and timers to default stability, and adds automatic meter management for resources added at runtime. 41.0.1 in August was a security patch closing three IIOP CVEs.

◆ Where it's heading

WildFly moves features through stability levels release by release; 42 promotes the eviction configuration that first arrived in 39. The bug list also shows continuing cleanup of XML parsing issues (CWE-611) and clustering edge cases.

◆ Prediction

Expect 42.0.1.Final next, consolidating fixes and component upgrades as 41.0.1 did.

Alternatives to Rivet and WildFly

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 WildFly.

See all Rivet alternatives → · See all WildFly alternatives →

Recent activity from Rivet and WildFly

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. 8d agoRivetRust SDK for Rivet Actors Is Now Generally Available
  4. 19d agoRivetIntroducing Rivet 3.0 Preview ⚡
  5. 22d agoWildFlyWildFly 42: virtual threads for Jakarta Concurrency
  6. 1mo agoRivetIntroducing agentOS 0.4 & Hosted VMs
  7. 1mo agoWildFlyWildFly 42 Beta1: virtual threads and session eviction
  8. 1mo agoRivetIntroducing Pi Durable for Rivet
  9. 2mo agoWildFlyWildFly 41.0.1 closes three IIOP CVEs and a Mojarra advisory
  10. 4mo agoWildFlyWildFly 41 promotes OIDC scope and request-object support
  11. 4mo agoWildFlyWildFly 41 Beta adds transactions during graceful shutdown
  12. 4mo agoWildFlyWildFly 40.0.1 moves container images to JDK 25, drops JDK 17

Frequently asked questions

What is the difference between Rivet and WildFly?

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 WildFly?

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 WildFly?

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