Home Assistant Operating System vs Pimatic
A side-by-side comparison of two self-hosted home automation options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Home Assistant Operating System | Pimatic |
|---|---|---|
| Deploy effort | ≈5-minute setup | Read-the-docs project |
| Health score | 91 · Excellent | 11 · At risk |
| Category | Home Automation | Home Automation |
| License | Apache-2.0 | GPL-2.0 |
| Language | Python | CoffeeScript |
| Setup difficulty | Easy | Medium |
| Min. RAM | 1,024 MB | 256 MB |
| Deployment | one-click, bare-metal | bare-metal, source |
| GitHub stars | ★ 7,492 | ★ 598 |
| First released | 2019 | 2013 |
| Replaces | SmartThings, Hubitat | SmartThings |
What are Home Assistant Operating System and Pimatic?
Home Assistant Operating System
Home Assistant Operating System is a minimal embedded OS designed to run the Home Assistant smart home platform with add-on support. It manages updates and add-ons through the Supervisor.
- Purpose-built OS for HA
- Add-on store via Supervisor
- Automatic updates
- Runs on Pi and x86
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
Home Assistant Operating System vs Pimatic: key differences
Home Assistant Operating System is written in Python, while Pimatic is built with CoffeeScript. Licensing differs — Apache-2.0 for Home Assistant Operating System versus GPL-2.0 for Pimatic. Pimatic is the lighter option, starting around 256 MB of RAM against 1,024 MB for Home Assistant Operating System. Pimatic is the more established project (first released 2013), while Home Assistant Operating System arrived in 2019. Home Assistant Operating System has the considerably larger community, at 7,492 GitHub stars versus 598.
Why pick each one
Choose Home Assistant Operating System if…
- Easiest full-featured HA install
- Managed add-ons
Watch out for
- Takes over the whole device
- Less general-purpose
Choose Pimatic if…
- Lightweight
- Simple rule system
Watch out for
- Development has slowed
- Smaller community
Frequently asked questions
Is Home Assistant Operating System or Pimatic better?
Home Assistant Operating System 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 Home Assistant Operating System and Pimatic free and open-source?
Yes. Home Assistant Operating System is licensed under Apache-2.0 and Pimatic under GPL-2.0. Both can be self-hosted at no software cost.
Can I run Home Assistant Operating System and Pimatic with Docker?
Home Assistant Operating System: check the project docs for container support. Pimatic: check the project docs for container support.
Which is lighter on resources, Home Assistant Operating System or Pimatic?
Pimatic has the smaller minimum footprint at 256 MB of RAM, compared to about 1,024 MB for Home Assistant Operating System. Real-world usage depends on library size, user count, and enabled features.