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Mosquitto vs Mozilla WebThings Gateway

A side-by-side comparison of two self-hosted home automation options — licensing, setup difficulty, resource needs, and what each one replaces.

Not the right match-up?
Mosquitto Lightweight MQTT message broker VS MO Mozilla WebThings Gateway Open gateway for the decentralized web of things
FeatureMosquittoMozilla WebThings Gateway
Deploy effortUnder-an-hour setupUnder-an-hour setup
Health score92 · Excellent81 · Excellent
CategoryHome AutomationHome Automation
LicenseEPL-2.0MPL-2.0
LanguageCTypeScript
Setup difficultyEasyMedium
Min. RAM64 MB512 MB
Deploymentdocker, bare-metalbare-metal, docker
GitHub stars★ 11,221★ 2,646
First released20092018
ReplacesSmartThingsSmartThings, Google Home

What are Mosquitto and Mozilla WebThings Gateway?

Mosquitto

Eclipse Mosquitto is a lightweight, open-source MQTT broker widely used as the messaging backbone for smart home setups. It targets users connecting IoT devices and automation tools. It is deployed via Docker or packages.

  • Standards-compliant MQTT broker
  • Tiny resource footprint
  • TLS and authentication
  • Bridges between brokers

Read the full Mosquitto guide →

Mozilla WebThings Gateway

WebThings Gateway is an open-source gateway for monitoring and controlling smart home devices over the web using open standards. Originating at Mozilla, it now continues as a community project.

  • Web of Things standards
  • Add-on device support
  • Rules engine
  • Local web interface

Read the full Mozilla WebThings Gateway guide →

Mosquitto vs Mozilla WebThings Gateway: key differences

Mosquitto is written in C, while Mozilla WebThings Gateway is built with TypeScript. Licensing differs — EPL-2.0 for Mosquitto versus MPL-2.0 for Mozilla WebThings Gateway. Mosquitto is the lighter option, starting around 64 MB of RAM against 512 MB for Mozilla WebThings Gateway. Mosquitto is the more established project (first released 2009), while Mozilla WebThings Gateway arrived in 2018. Mosquitto has the considerably larger community, at 11,221 GitHub stars versus 2,646.

Why pick each one

Choose Mosquitto if…

  • Extremely lightweight
  • Rock-solid reliability
  • Ubiquitous in smart homes

Watch out for

  • Just a broker, not automation
  • Minimal management UI
Mosquitto details

Choose Mozilla WebThings Gateway if…

  • Open standards-based
  • Privacy-focused

Watch out for

  • Smaller community after Mozilla
  • Fewer integrations than HA
Mozilla WebThings Gateway details

Frequently asked questions

Is Mosquitto or Mozilla WebThings Gateway better?

Mosquitto is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider Mozilla WebThings Gateway if its specific feature set fits your needs better.

Are Mosquitto and Mozilla WebThings Gateway free and open-source?

Yes. Mosquitto is licensed under EPL-2.0 and Mozilla WebThings Gateway under MPL-2.0. Both can be self-hosted at no software cost.

Can I run Mosquitto and Mozilla WebThings Gateway with Docker?

Mosquitto: yes. Mozilla WebThings Gateway: yes.

Which is lighter on resources, Mosquitto or Mozilla WebThings Gateway?

Mosquitto has the smaller minimum footprint at 64 MB of RAM, compared to about 512 MB for Mozilla WebThings Gateway. Real-world usage depends on library size, user count, and enabled features.

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