Solace
Create event-driven apps and microservices on any platform with whatever language, open protocols, and APIs you choose.
- Also known as
- solace
What is Solace?
Event-driven messaging platform supporting multiple protocols (MQTT, JMS, REST) and SDKs for Java, Python, Go, and JavaScript. Enables pub/sub and direct messaging patterns for building distributed applications.
What Solace does
The capabilities that matter for message queues, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Messaging paradigm
- Pub/sub
- Delivery guarantee
- -
- Ordering guarantee
- -
- Durable replayable log
- ✓
- Message replay / rewind
- -
- Wire protocol
- REST, MQTT, JMS 2.0, JMS 1.1
- Kafka-protocol compatible
- -
- Partitioned horizontal scaling
- ✓
- Geo / cross-region replication
- -
- Consumer groups / competing consumers
- ✓
- Dead-letter queue
- -
- Managed cloud offering exists
- ✓
- Hosting
- Cloud + self-hosted
- Built-in stream processing
- -
Platform & deployment
Independently observed- CLI
- Linux
- Cloud / SaaS
- Self-hosted
Integrations (4)
Independently observed- AWS
- Kafka
- Spark
- IBM WebSphere
Solace alternatives
Other message queues we track, ranked by the same independent score.
- Apache KafkaDistributed event streaming platform for high-performance data pipelines and streaming analyticslow · 26%
- NATSlow · 30%
- Temporalmedium · 59%
- RedpandaHigh-performance Kafka-compatible streaming platform for real-time data and AI agentslow · 45%
- RabbitMQlow · 26%
- WarpStream10x Cheaper Than Kafkamedium · 62%
The Vioscale score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Solace, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Capabilities | 67 | 12.00 | 805.4 | ✓ |
| Integrations | 20 | 16.00 | 321.6 | ✓ |
| Price Level | 0 | 8.00 | 0.0 | - |
| Reliability | 0 | 30.00 | 0.0 | - |
| Security Posture | 0 | 22.00 | 0.0 | - |
| Pricing Transparency | 0 | 12.00 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | {"hosting":"both","paradigm":"pubsub","protocol":"REST, MQTT, JMS 2.0, JMS 1.1","persistent_log":true,"consumer_groups":true,"managed_offering":true,"horizontal_scaling":true} | mediumsource · 2026-08-03 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 4 | mediumsource · 2026-08-03 · 60% |