Solace PubSub+ Event Broker
Solace PubSub+ Event Broker: A protocol-rich event broker for teams building hybrid, multi-protocol event meshes. Ranked #23 of 27 in Event Streaming Platforms by our editors (7.0/10); pricing: Free plan · 30-day trial; best for teams building multi-protocol event meshes.
At a glance
- Editor score7.0 / 10
- PricingFree plan · 30-day trial
- Best forTeams building multi-protocol event meshes
- Free planYes
- Deployment modelHybrid
- Founded2001 · Ottawa, Ontario, Canada
- Facts checked20 Sep 2026
Where it wins
- Routes events dynamically across cloud, on-premises and edge environments
- Connects through MQTT, AMQP, JMS, REST, WebSockets and Kafka options
- Combines persistent, direct, replay and high-availability messaging
Where it doesn't
- Delivery is at-least-once rather than exactly-once
- Stream processing is not included as an intrinsic capability
- Schema Registry is a separate component, not part of the Event Broker
Our verdict on Solace PubSub+ Event Broker
Solace PubSub+ Event Broker routes real-time events among applications, services and devices. It supports publish/subscribe, point-to-point, request/reply and FIFO queue messaging, making it suitable for enterprise event-driven architectures, hybrid-cloud integration, operational event distribution and IoT messaging. Teams can deploy it through cloud-managed services, self-managed software or appliances, with event-mesh routing across environments. Browser-based broker management and client support for languages including C, C#/.NET, Go, Java, JavaScript, Node.js and Python broaden its fit for mixed development teams.
Protocol and deployment flexibility are central to the product. Connectivity includes MQTT, AMQP, JMS, REST and WebSockets, while Kafka bridge and Kafka source/sink connector options support Kafka-oriented environments. Dynamic routing, hierarchical topics, filtering and wildcards help organize event distribution across a mesh. Persistent guaranteed messaging provides at-least-once delivery, while direct messaging offers at-most-once delivery for high-speed use cases. Message replay and caching add useful control for systems that need to revisit events, and high availability and disaster recovery support address continuity requirements.
The published commercial model is freemium: the cloud product includes a 30-day trial, and the self-managed software offering includes a free version. Broker tiers publish capacity and storage details. Solace PubSub+ Event Broker is a strong fit when protocol breadth, hybrid deployment and event routing matter more than a single-stream architecture. Teams seeking built-in stream processing or an intrinsic Schema Registry should consider a platform with those capabilities included. Its at-least-once delivery model also makes it less suitable when exactly-once processing is a core requirement.
Your product? Our editors can test Solace PubSub+ Event Broker in depth and publish a review, labelled as paid · from $149/mo →
Solace PubSub+ Event Broker pricing
Solace PubSub+ Event Broker fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Not verified |
| Deployment model | Hybrid |
| Maximum retention | Not verified |
| Stream processing | No |
| Schema registry | No |
| Delivery guarantee | At-least-once |
| Connectors listed | Not verified |
| Supported client languages | C, C#/.NET, Go, Java, Java RTO, JCSMP, Jakarta Messaging, JavaScript, Node.js, Python, iOS |
| Free trial | 30 days |
| Deployment | Cloud, Self-hosted |
| Platforms | Web |
| Compliance & security | SOC 2, ISO 27001, GDPR, HIPAA |
| Support | Email, Phone, Tickets, Community · 24/7 |
| Built for | Mid-market, Enterprise (editorial estimate) |
| Integrations | 6 integrations: Kafka, AMQP, JMS, MQTT, REST, WebSocket See all → |
| Pricing | Free plan · 30-day trial (source) |
| Website | solace.com |
| Facts checked | 20 Sep 2026 |
Solace PubSub+ Event Broker integrations
Solace PubSub+ Event Broker lists 6 integrations on its own site.
- Kafka
- AMQP
- JMS
- MQTT
- REST
- WebSocket
See all Solace PubSub+ Event Broker integrations →
Alternatives to Solace PubSub+ Event Broker
- Apache KafkaA deep, self-hosted Kafka foundation for teams prepared to own operations.9.4
- Confluent CloudA broad managed Kafka platform with strong governance, but a high paid entry price.9.2
- Aiven for Apache KafkaManaged Kafka with a free plan, schema tools, connectors, replication, and hybrid deployment.9.0
See all Solace PubSub+ Event Broker alternatives →
Also Ranked In
Solace PubSub+ Event Broker is ranked in 3 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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