LibreMQ

At a glance

• Editor score
  4.8 / 10
• Pricing
  Free plan
• Best for
  Developers seeking a minimal, free clustered MQTT broker
• Free plan
  Yes
• Paid from
  Free
• Deployment model
  Self-hosted
• Facts checked
  14 Nov 2026

• Where it wins

  • Free and open source under the Apache License 2.0
  • Supports cluster mode
  • Self-hosted deployment for IoT and connected systems

• Where it doesn't

  • LibreMQ-specific protocol details are sparse
  • Authentication methods are not documented in the visible README
  • Connection limits and deployment choices are not documented

Our verdict on LibreMQ

LibreMQ is a community-maintained MQTT broker forked from EMQX’s v5.8.x release branch. It is intended for MQTT messaging in IoT and connected systems, with a stated goal of maintaining an Apache License 2.0 broker that includes unrestricted cluster mode. That makes it a fit for developers who want a free, self-hosted starting point and are prepared to assess a project with limited LibreMQ-specific documentation. Teams needing clearly documented operational requirements should look for a broker with fuller product guidance.

The project’s defining capabilities are its MQTT broker role, cluster mode, and Apache License 2.0. Those establish a narrow but useful baseline: the broker is open source, can be self-hosted, and is intended to support clustered operation. The visible README largely describes EMQX rather than LibreMQ itself, so EMQX-specific protocols, authentication features, and other capabilities should not be assumed to apply. Buyers evaluating protocol coverage or message-handling behavior will need LibreMQ-specific information before making a fit decision.

LibreMQ’s minimal presentation leaves practical deployment questions open, including authentication methods, deployment choices beyond self-hosting, and connection limits. It is best suited to developers comfortable examining the project directly and evaluating whether its documented core meets their needs. Organizations that need explicit security details, defined capacity limits, or extensive setup guidance should consider alternatives with those requirements documented. The Apache license and cluster mode may appeal to teams seeking control over deployment, but the available description does not establish a broader feature or integration ecosystem.

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LibreMQ pricing

LibreMQ fact sheet

Alternatives to LibreMQ

• AIAWS IoT CoreA managed MQTT broker with device tools and message routing for AWS-centric IoT systems.9.4
• AEAzure Event Grid MQTT brokerA managed MQTT broker with Azure routing, flexible authentication, and usage-based pricing.9.2
• ABApache BifroMQA self-hosted broker with clustering, distributed storage, and support for MQTT 3.1 through 5.0.9.1

See all LibreMQ alternatives →

Featured on iTechGuides

LibreMQ is listed in our MQTT Broker Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026

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Last updated 14 Nov 2026 · How we research and update