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Comparison · DevOps

Mirth Connect vs NATS

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

Mirth Connect vs NATS: at a glance

FeatureMirth ConnectNATS
SectorDevOpsDevOps
Velocity score0.05.0
Sparks · 30d00
Top themeshealthcare-integration, hl7, cve-remediation, duo-mfamessaging, jetstream, operations, release candidates
Last editorial update3mo ago7h ago
WebsiteVisit →Visit →

What is Mirth Connect?

A healthcare integration engine that spent two years recovering from one CVE

Mirth Connect's release notes are thin — a sentence of framing, then download tables — with the substance living on external release-notes pages. What is visible is a security posture. Two entries carry an explicit banner that the version is affected by CVE-2023-43208 and CVE-2023-37679 and that users must move to 4.4.1 or later, and the releases after that are dominated by security patches rather than features. Platform deadlines recur: Duo's Traditional Prompt retired, Java 17 becoming the minimum.

Read the full Mirth Connect trajectory →

What is NATS?

NATS second release candidates add a config reload check and faster redelivery queues.

NATS keeps the 2.14 and 2.15 lines in step, and on November 6 both got a second release candidate. The RCs make filtered filestore scans skip non-matching messages, stop redelivery queues from copying whole backlogs on each dequeue, and fix AckAll and gateway interest bugs. 2.15.3-RC.2 also adds a -t --test_reload flag that tells operators whether a config change needs a restart.

Read the full NATS trajectory →

Mirth Connect vs NATS: editorial side-by-side

M0.0

A healthcare integration engine that spent two years recovering from one CVE

◆ Current state

Mirth Connect's release notes are thin — a sentence of framing, then download tables — with the substance living on external release-notes pages. What is visible is a security posture. Two entries carry an explicit banner that the version is affected by CVE-2023-43208 and CVE-2023-37679 and that users must move to 4.4.1 or later, and the releases after that are dominated by security patches rather than features. Platform deadlines recur: Duo's Traditional Prompt retired, Java 17 becoming the minimum.

◆ Where it's heading

The arc is remediation and platform currency, not capability. Once a remote-code-execution class vulnerability hits an engine sitting between hospital systems, the product's job becomes proving it is safe to keep running, and the 4.4.x and 4.5.x lines read accordingly — patch releases described only as security improvements. The forward-looking notices about Java 17 and the Administrator Launcher signal that upgrade friction is the next thing operators will feel.

◆ Prediction

Expect the Java 17 minimum to land as the gating change in an upcoming release, since it is the only concrete commitment these notes make about future versions.

N
NATS
DEVOPS
5.0

NATS second release candidates add a config reload check and faster redelivery queues.

◆ Current state

NATS keeps the 2.14 and 2.15 lines in step, and on November 6 both got a second release candidate. The RCs make filtered filestore scans skip non-matching messages, stop redelivery queues from copying whole backlogs on each dequeue, and fix AckAll and gateway interest bugs. 2.15.3-RC.2 also adds a -t --test_reload flag that tells operators whether a config change needs a restart.

◆ Where it's heading

The project is in a hardening stretch on both lines, with JetStream efficiency and correctness fixes landing alongside small operator tools. Account-hash subject mappings from RC1 remain the main new routing feature heading to release.

◆ Prediction

Expect 2.15.3 and 2.14.10 final releases shortly, carrying the RC2 fixes and the reload check.

Alternatives to Mirth Connect and NATS

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 Mirth Connect or NATS.

See all Mirth Connect alternatives → · See all NATS alternatives →

Recent activity from Mirth Connect and NATS

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

  1. 3d agoNATSNATS 2.14.10 RC2 backports JetStream redelivery and ack fixes
  2. 3d agoNATSNATS 2.15.3 RC2 adds a config reload check, faster redelivery
  3. 7d agoNATSNATS 2.14.10 RC1 backports account-hash subject mappings
  4. 7d agoNATSNATS 2.15.3 RC1 adds account-hash subject mapping functions
  5. 14d agoNATSNATS 2.15.2 patches certificate-trust CVE via Go update
  6. 14d agoNATSNATS 2.14.9 picks up Go security update
  7. 1y agoMirth Connect4.5.2 patches security and announces a Java 17 minimum
  8. 2y agoMirth Connect4.5.1 ships as a security-only patch
  9. 2y agoMirth Connect4.5.0 moves Duo MFA to the Universal Prompt
  10. 3y agoMirth ConnectMirth Connect 4.4.2
  11. 3y agoMirth Connect4.1.0 adds event log messages and richer alerts, but carries the critical CVE
  12. 3y agoMirth ConnectMirth Connect 4.1.1

Frequently asked questions

What is the difference between Mirth Connect and NATS?

They serve adjacent needs but don't currently overlap on shipped themes. NATS is currently shipping more aggressively (velocity 5.0 vs 0.0), with 0 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 Mirth Connect better than NATS?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. NATS is currently shipping more aggressively (velocity 5.0 vs 0.0), with 0 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 Mirth Connect?

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

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.