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Head-to-head · Message Broker Software

Solace PubSub+ Event Broker vs Google Cloud Pub/Sub

Updated Oct 2026
Both researched from official sources
2 checks 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

Google Cloud Pub/Sub #3 in Message Broker Software 9.1/10 Free plan Free plan✓ 1 of 1 features Visit Google Cloud

Solace PubSub+ Event Broker leads on 0 checks, Google Cloud Pub/Sub on 0, and 2 are even. Who comes out ahead on the 2 yes/no, price and count checks 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 planboth
Free trialonly Solace PubSub+ Event Broker
Most featuresGoogle Cloud Pub/Sub · 1 of 1

Solace PubSub+ Event Broker scores higher on our rubric for message broker software: 9.2 against 9.1 out of 10; our editors rank them #2 and #3.

On deployment model, Solace PubSub+ Event Broker gives you Hybrid where Google Cloud Pub/Sub offers Cloud.

Solace PubSub+ Event Broker is the better fit for hybrid event mesh deployments. Google Cloud Pub/Sub is the better fit for managed cloud pub/sub.

Solace PubSub+ Event Broker fits best
Hybrid event mesh deployments
Google Cloud Pub/Sub fits best
Managed cloud pub/sub

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Side by side

Show only differences

Feature	Solace PubSub+ Event Broker 9.2/10 Visit ↗	Google Cloud Pub/Sub 9.1/10 Visit ↗
At a glance
Editor score	9.2	9.1
Ranking	#2 in Message Broker Software	#3 in Message Broker Software
Best for	Hybrid event mesh deployments	Managed cloud pub/sub
Pricing model	Free plan + paid	Free plan + paid
Starting price	Free plan · 30-day trial	—
Free plan	✓	✓
Free trial	30 days	—
Deployment	Cloud, Self-hosted	Cloud
Platforms	Web	Web
Support	Email, Phone, Tickets, Community · 24/7	Tickets, Community, Docs · 24/7
Compliance	SOC 2, ISO 27001, GDPR, HIPAA	HIPAA
Integrations	6 integrations	9 integrations
Built for	Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features Solace PubSub+ Event Broker 0/1 · Google Cloud Pub/Sub 1/1
Dead-letter queues	Not checked yet	✓ (best)
Specs
Deployment model	Hybrid	Cloud
Delivery guarantees	Not checked yet	Configurable
Ordering guarantees	Not checked yet	Not checked yet
Maximum message size	Not checked yet	10 MB
Supported protocols	Not checked yet	REST, gRPC
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	Exactly-once delivery, ordering keys, replay, and dead-letter topics Pull and push subscriptions with message filtering Integrations with BigQuery, Cloud Storage, Dataflow, and more
Cons	Proprietary rather than open source Stream processing is not part of the broker Schema Registry is a separate component	Paid standard throughput starts at $40 per TiB monthly Storage, transfer, import, export, and transformation charges can also apply Cloud deployment may not suit teams seeking a self-managed broker
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 →	Google Cloud Pub/Sub is a fully managed real-time messaging service for exchanging messages between independent applications. It fits teams building event-driven applications, streaming pipelines, and distributed systems that need publish… Read the review →

Solace PubSub+ Event BrokerMessage Broker Software 9.2Free plan · 30-day trial
Google Cloud Pub/SubMessage Broker Software 9.1Free plan

Compare the top tools in

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
Google Cloud Pub/Sub — where it wins
- Exactly-once delivery, ordering keys, replay, and dead-letter topics
- Pull and push subscriptions with message filtering
- Integrations with BigQuery, Cloud Storage, Dataflow, and more
Where it doesn't
- Paid standard throughput starts at $40 per TiB monthly
- Storage, transfer, import, export, and transformation charges can also apply
- Cloud deployment may not suit teams seeking a self-managed broker

Solace PubSub+ Event Broker9.2/10 · Free plan · 30-day trial
A broad hybrid event broker for teams connecting applications, services and devices.
Visit Solace Full verdict →
Google Cloud Pub/Sub9.1/10 · Free plan
A managed cloud pub/sub service with strong delivery controls and usage-based pricing.
Visit Google Cloud Full verdict →

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated 7 Oct 2026 · How we research and update