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Head-to-head · Message Broker Software

Solace PubSub+ Event Broker vs Apache RocketMQ

  • Updated Nov 2026
  • Both researched from official sources
  • 1 check side by side
Higher score Solace PubSub+ Event Broker #2 in Message Broker Software 9.2/10 Free plan · 30-day trial Free planFree trial✓ 0 of 1 features Visit Solace
Apache RocketMQ #7 in Message Broker Software 8.6/10 Open source ✓ 0 of 1 features Try Apache RocketMQ

Solace PubSub+ Event Broker leads on 0 checks, Apache RocketMQ on 0, and 1 is even. Who comes out ahead on the 1 yes/no, price and count check where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreSolace PubSub+ Event Broker · 9.2/10
  • Free planonly Solace PubSub+ Event Broker
  • Free trialonly Solace PubSub+ Event Broker

Solace PubSub+ Event Broker scores higher on our rubric for message broker software: 9.2 against 8.6 out of 10; our editors rank them #2 and #7.

Solace PubSub+ Event Broker is the better fit for hybrid event mesh deployments. Apache RocketMQ is the better fit for open-source streaming and transactions.

  • Solace PubSub+ Event Broker fits best

    Hybrid event mesh deployments

  • Apache RocketMQ fits best

    Open-source streaming and transactions

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Side by side

Feature Solace PubSub+ Event Broker 9.2/10 Visit ↗ Apache RocketMQ 8.6/10 Visit ↗
At a glance
Editor score 9.2 8.6
Ranking #2 in Message Broker Software #7 in Message Broker Software
Best for Hybrid event mesh deployments Open-source streaming and transactions
Pricing model Free plan + paid Free
Starting price Free plan · 30-day trial Open source
Free plan ✓ (best) Not checked yet
Free trial 30 days —
Deployment Cloud, Self-hosted Self-hosted, Cloud
Platforms Web Linux, Windows, macOS
Support Email, Phone, Tickets, Community · 24/7 Docs, Community
Integrations 6 integrations 50+ integrations
Built for Mid-market, Enterprise Mid-market, Enterprise
Features Solace PubSub+ Event Broker 0/1 · Apache RocketMQ 0/1
Dead-letter queues Not checked yet Not checked yet
Specs
Deployment model Hybrid Not checked yet
Delivery guarantees Not checked yet Not checked yet
Ordering guarantees Not checked yet Not checked yet
Maximum message size Not checked yet Not checked yet
Supported protocols Not checked yet Not checked yet
Our review
Pros
  • Supports pub/sub, queues, request/reply, FIFO and dynamic routing
  • Connects through MQTT, AMQP, JMS, REST, WebSockets and Kafka
  • Combines persistent delivery, direct messaging, replay, HA and disaster recovery
  • Transactional messages with two-phase commit, FIFO, and delayed delivery
  • Replay, filtering, stream processing, and source and sink connectors
  • Broad protocol support with SDKs for Java, Go, C++, Rust, Python, and Node.js
Cons
  • Proprietary rather than open source
  • Stream processing is not part of the broker
  • Schema Registry is a separate component
  • Self-hosted deployment places infrastructure operations with your team
  • Its broad feature set may require specialist messaging expertise
  • This listing covers the open-source project, not a managed cloud service
Our verdict

Solace PubSub+ Event Broker routes real-time events between applications, services and devices. It is designed for enterprise event-driven architectures, operational event distribution, hybrid-cloud integration and IoT messaging. Teams can…

Read the review →

Apache RocketMQ is an open-source distributed messaging and event-streaming platform from the Apache Software Foundation. It is designed for microservices, data integration, IoT, and AI communication workloads, with self-hosted deployment…

Read the review →
  1. Solace PubSub+ Event BrokerMessage Broker Software 9.2Free plan · 30-day trial
  2. Apache RocketMQMessage Broker Software 8.6Open source

Strengths and trade-offs

  • Solace PubSub+ Event Broker — where it wins

    • Supports pub/sub, queues, request/reply, FIFO and dynamic routing
    • Connects through MQTT, AMQP, JMS, REST, WebSockets and Kafka
    • Combines persistent delivery, direct messaging, replay, HA and disaster recovery

    Where it doesn't

    • Proprietary rather than open source
    • Stream processing is not part of the broker
    • Schema Registry is a separate component

  • Apache RocketMQ — where it wins

    • Transactional messages with two-phase commit, FIFO, and delayed delivery
    • Replay, filtering, stream processing, and source and sink connectors
    • Broad protocol support with SDKs for Java, Go, C++, Rust, Python, and Node.js

    Where it doesn't

    • Self-hosted deployment places infrastructure operations with your team
    • Its broad feature set may require specialist messaging expertise
    • This listing covers the open-source project, not a managed cloud service
  • Solace PubSub+ Event Broker9.2/10 · Free plan · 30-day trial

    A broad hybrid event broker for teams connecting applications, services and devices.

    Visit SolaceFull verdict →
  • Apache RocketMQ8.6/10 · Open source

    A broad, open-source broker for teams building self-hosted event-driven systems.

    Try Apache RocketMQFull verdict →

More comparisons

All message broker software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026

Last updated · How we research and update