Comparison

Solace vs ZeroMQ

On the evidence we track, ZeroMQ leads this comparison with a composite score of 57/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Solace full profile →ZeroMQ full profile →

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Solace48

★ZeroMQ57

Attribute comparison across 2 tools
Attribute	Solace	ZeroMQLeader
Vioscale score	48 / 100low · 7%	57 / 100low · 48%
Pricing
Free tierpricing.free_tier	-	✓
Modelpricing.model	-	open_source
Price levelpricing.price_level	-	free
Transparentpricing.transparent	-	✓
Integrations
Countintegrations.count	4	11
Security
Scorecardsecurity.scorecard	-	5.7
Vulnerabilitiessecurity.vulnerabilities	-	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=conda&package_name=zeromq&per_page=100 · Last 12m: 0
Adoption
Dependent reposadoption.dependent_repos	-	2,003
Github starsadoption.github_stars	-	10,972
Package downloads weeklyadoption.package_downloads_weekly	-	25,005,888
Activity
Commits last 30dactivity.commits_last_30d	-	19
Release
Cadence daysrelease.cadence_days	-	114
Historyrelease.history	-	13 items
License
Spdxlicense.spdx	-	MPL-2.0
Language
Primarylanguage.primary	-	C++

Score

Vioscale score

Solace48 / 100low · 7%

ZeroMQ57 / 100low · 48%

Pricing

Free tier

Solace–

ZeroMQ✓

Model

Solace–

ZeroMQopen_source

Price level

Solace–

ZeroMQfree

Transparent

Solace–

ZeroMQ✓

Integrations

Count

Solace4

ZeroMQ11

Security

Scorecard

Solace–

ZeroMQ5.7

Vulnerabilities

Solace–

ZeroMQCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=conda&package_name=zeromq&per_page=100 · Last 12m: 0

Adoption

Dependent repos

Solace–

ZeroMQ2,003

Github stars

Solace–

ZeroMQ10,972

Package downloads weekly

Solace–

ZeroMQ25,005,888

Activity

Commits last 30d

Solace–

ZeroMQ19

Release

Cadence days

Solace–

ZeroMQ114

History

Solace–

ZeroMQ13 items

License

Spdx

Solace–

ZeroMQMPL-2.0

Language

Primary

Solace–

ZeroMQC++

Capabilities

Feature-by-feature on the axes that matter for message queues. “-” means undocumented, not absent.

Capability comparison for Message Queues
Capability	Solace	ZeroMQ
Core
Messaging paradigm	Pub/sub	Pub/sub
Correctness
Delivery guarantee	At-most-once	-
Ordering guarantee	Per-partition	-
Durability
Durable replayable log	✗	-
Message replay / rewind	-	-
Interop
Wire protocol	MQTT, REST, JMS, Direct	ZMTP/3.1
Kafka-protocol compatible	-	-
Scale
Partitioned horizontal scaling	✓	-
Geo / cross-region replication	-	-
Consumption
Consumer groups / competing consumers	✓	-
Dead-letter queue	-	-
Deployment
Managed cloud offering exists	✓	✗
Hosting	Cloud + self-hosted	Self-hosted only
Processing
Built-in stream processing	-	-

Core

Messaging paradigm

SolacePub/sub

ZeroMQPub/sub

Correctness

Delivery guarantee

SolaceAt-most-once

ZeroMQ-

Ordering guarantee

SolacePer-partition

ZeroMQ-

Durability

Durable replayable log

Solace✗

ZeroMQ-

Message replay / rewind

Solace-

ZeroMQ-

Interop

Wire protocol

SolaceMQTT, REST, JMS, Direct

ZeroMQZMTP/3.1

Kafka-protocol compatible

Solace-

ZeroMQ-

Scale

Partitioned horizontal scaling

Solace✓

ZeroMQ-

Geo / cross-region replication

Solace-

ZeroMQ-

Consumption

Consumer groups / competing consumers

Solace✓

ZeroMQ-

Dead-letter queue

Solace-

ZeroMQ-

Deployment

Managed cloud offering exists

Solace✓

ZeroMQ✗

Hosting

SolaceCloud + self-hosted

ZeroMQSelf-hosted only

Processing

Built-in stream processing

Solace-

ZeroMQ-

What each one is

The product in its own terms, so the numbers below have context.

Solace

A messaging service that enables developers to create event-driven applications and microservices using multiple programming languages and open protocols (MQTT, REST, JMS, proprietary Direct) across cloud and self-hosted deployment options.

Independently observed

ZeroMQ

Leader

ZeroMQ is a messaging library that enables asynchronous communication through socket abstractions, supporting multiple communication patterns, message subscriptions, and access to various transport protocols.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Solace

Pricing not documented yet.

ZeroMQ

Leader

Open sourceFree tier

as of 2026-08-14verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	Solace	ZeroMQ
AndroidPlatforms	✗	✓
macOSPlatforms	✗	✓
WindowsPlatforms	✗	✓
LinuxPlatforms	✓	✓
CLIPlatforms	✓	✗
Cloud / SaaSDeployment	✓	✗
Self-hostedDeployment	✓	✓

Platforms

Android

Solace✗

ZeroMQ✓

macOS

Solace✗

ZeroMQ✓

Windows

Solace✗

ZeroMQ✓

Linux

Solace✓

ZeroMQ✓

CLI

Solace✓

ZeroMQ✗

Deployment

Cloud / SaaS

Solace✓

ZeroMQ✗

Self-hosted

Solace✓

ZeroMQ✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Solace

4 total

AWS
Kafka
Spark
IBM WebSphere

Independently observed

ZeroMQ

Leader

11 total

Microsoft
Samsung
AT&T
Spotify
Facebook
Digital Ocean
Auth0
Bitcoin
Jupyter
Mongrel2
Jina

Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.