Mosquitto vs Pimatic
A side-by-side comparison of two self-hosted home automation options — licensing, setup difficulty, resource needs, and what each one replaces.
Mosquitto
Lightweight MQTT message broker
VS
Pimatic
Node.js home automation framework for the Raspberry Pi
| Feature | Mosquitto | Pimatic |
|---|---|---|
| Deploy effort | Under-an-hour setup | Read-the-docs project |
| Health score | 92 · Excellent | 11 · At risk |
| Category | Home Automation | Home Automation |
| License | EPL-2.0 | GPL-2.0 |
| Language | C | CoffeeScript |
| Setup difficulty | Easy | Medium |
| Min. RAM | 64 MB | 256 MB |
| Deployment | docker, bare-metal | bare-metal, source |
| GitHub stars | ★ 11,221 | ★ 598 |
| First released | 2009 | 2013 |
| Replaces | SmartThings | SmartThings |
What are Mosquitto and Pimatic?
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
Pimatic
Pimatic is an open-source home automation framework built on Node.js that runs on low-power devices such as the Raspberry Pi. Plugins add device support, and a rule engine plus a mobile-friendly web UI handle control and automation.
- Plugin-based device support
- Rule engine
- Mobile-friendly web UI
- Runs on Raspberry Pi
Mosquitto vs Pimatic: key differences
Mosquitto is written in C, while Pimatic is built with CoffeeScript. Licensing differs — EPL-2.0 for Mosquitto versus GPL-2.0 for Pimatic. Mosquitto is the lighter option, starting around 64 MB of RAM against 256 MB for Pimatic. Mosquitto is the more established project (first released 2009), while Pimatic arrived in 2013. Mosquitto has the considerably larger community, at 11,221 GitHub stars versus 598. Mosquitto lists first-class Docker deployment; Pimatic does not.
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
Choose Pimatic if…
- Lightweight
- Simple rule system
Watch out for
- Development has slowed
- Smaller community
Frequently asked questions
Is Mosquitto or Pimatic better?
Mosquitto is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider Pimatic if its specific feature set fits your needs better.
Are Mosquitto and Pimatic free and open-source?
Yes. Mosquitto is licensed under EPL-2.0 and Pimatic under GPL-2.0. Both can be self-hosted at no software cost.
Can I run Mosquitto and Pimatic with Docker?
Mosquitto: yes. Pimatic: check the project docs for container support.
Which is lighter on resources, Mosquitto or Pimatic?
Mosquitto has the smaller minimum footprint at 64 MB of RAM, compared to about 256 MB for Pimatic. Real-world usage depends on library size, user count, and enabled features.