Home Assistant vs Mosquitto
A side-by-side comparison of two self-hosted home automation options — licensing, setup difficulty, resource needs, and what each one replaces.
Home Assistant
Open-source home automation that puts privacy first
VS
Mosquitto
Lightweight MQTT message broker
| Feature | Home Assistant | Mosquitto |
|---|---|---|
| Deploy effort | ≈5-minute setup | Under-an-hour setup |
| Health score | 100 · Excellent | 92 · Excellent |
| Category | Home Automation | Home Automation |
| License | Apache-2.0 | EPL-2.0 |
| Language | Python | C |
| Setup difficulty | Medium | Easy |
| Min. RAM | 1,024 MB | 64 MB |
| Deployment | docker, bare-metal, one-click | docker, bare-metal |
| GitHub stars | ★ 91,123 | ★ 11,221 |
| First released | 2013 | 2009 |
| Replaces | SmartThings, Google Home | SmartThings |
What are Home Assistant and Mosquitto?
Home Assistant
Home Assistant is an open-source home automation platform that integrates thousands of smart devices and runs automations locally. It targets anyone wanting private, vendor-neutral smart home control. It is deployed as an OS image, Docker, or supervised install.
- Integrates thousands of devices
- Local-first automations
- Add-on ecosystem
- Powerful dashboards
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
Home Assistant vs Mosquitto: key differences
Home Assistant is written in Python, while Mosquitto is built with C. Licensing differs — Apache-2.0 for Home Assistant versus EPL-2.0 for Mosquitto. Mosquitto is the lighter option, starting around 64 MB of RAM against 1,024 MB for Home Assistant. Mosquitto is the more established project (first released 2009), while Home Assistant arrived in 2013. Home Assistant has the considerably larger community, at 91,123 GitHub stars versus 11,221.
Why pick each one
Choose Home Assistant if…
- Huge device support
- Local control and privacy
- Very active community
Watch out for
- Learning curve for automations
- Occasional breaking updates
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 Home Assistant or Mosquitto better?
Neither is universally better. Home Assistant has the larger community, while Mosquitto is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.
Are Home Assistant and Mosquitto free and open-source?
Yes. Home Assistant is licensed under Apache-2.0 and Mosquitto under EPL-2.0. Both can be self-hosted at no software cost.
Can I run Home Assistant and Mosquitto with Docker?
Home Assistant: yes. Mosquitto: yes.
Which is lighter on resources, Home Assistant or Mosquitto?
Mosquitto has the smaller minimum footprint at 64 MB of RAM, compared to about 1,024 MB for Home Assistant. Real-world usage depends on library size, user count, and enabled features.