Domoticz vs Mosquitto
A side-by-side comparison of two self-hosted home automation options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Domoticz | Mosquitto |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 88 · Excellent | 92 · Excellent |
| Category | Home Automation | Home Automation |
| License | GPL-3.0 | EPL-2.0 |
| Language | C++ | C |
| Setup difficulty | Medium | Easy |
| Min. RAM | 256 MB | 64 MB |
| Deployment | docker, bare-metal | docker, bare-metal |
| GitHub stars | ★ 3,811 | ★ 11,221 |
| First released | 2012 | 2009 |
| Replaces | SmartThings | SmartThings |
What are Domoticz and Mosquitto?
Domoticz
Domoticz is a lightweight home automation system for monitoring and configuring various devices like sensors, switches, and meters. It targets users wanting an efficient automation hub on modest hardware. It is deployed via Docker or packages.
- Runs well on low-power hardware
- Supports many sensor protocols
- Scripting and events
- Mobile-friendly UI
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
Domoticz vs Mosquitto: key differences
Domoticz is written in C++, while Mosquitto is built with C. Licensing differs — GPL-3.0 for Domoticz versus EPL-2.0 for Mosquitto. Mosquitto is the lighter option, starting around 64 MB of RAM against 256 MB for Domoticz. Mosquitto is the more established project (first released 2009), while Domoticz arrived in 2012. Mosquitto has the considerably larger community, at 11,221 GitHub stars versus 3,811.
Why pick each one
Choose Domoticz if…
- Very lightweight
- Good on Raspberry Pi
- Stable
Watch out for
- Dated interface
- Smaller community than Home Assistant
Choose Mosquitto if…
- Extremely lightweight
- Rock-solid reliability
- Ubiquitous in smart homes
Watch out for
- Just a broker, not automation
- Minimal management UI
Frequently asked questions
Is Domoticz or Mosquitto better?
Mosquitto is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider Domoticz if its specific feature set fits your needs better.
Are Domoticz and Mosquitto free and open-source?
Yes. Domoticz is licensed under GPL-3.0 and Mosquitto under EPL-2.0. Both can be self-hosted at no software cost.
Can I run Domoticz and Mosquitto with Docker?
Domoticz: yes. Mosquitto: yes.
Which is lighter on resources, Domoticz or Mosquitto?
Mosquitto has the smaller minimum footprint at 64 MB of RAM, compared to about 256 MB for Domoticz. Real-world usage depends on library size, user count, and enabled features.