Home Assistant Operating System vs openHAB
A side-by-side comparison of two self-hosted home automation options — licensing, setup difficulty, resource needs, and what each one replaces.
openHAB
Vendor-neutral open-source home automation
| Feature | Home Assistant Operating System | openHAB |
|---|---|---|
| Deploy effort | ≈5-minute setup | Under-an-hour setup |
| Health score | 91 · Excellent | 79 · Good |
| Category | Home Automation | Home Automation |
| License | Apache-2.0 | EPL-2.0 |
| Language | Python | Java |
| Setup difficulty | Easy | Hard |
| Min. RAM | 1,024 MB | 1,024 MB |
| Deployment | one-click, bare-metal | docker, bare-metal |
| GitHub stars | ★ 7,492 | ★ 1,142 |
| First released | 2019 | 2010 |
| Replaces | SmartThings, Hubitat | SmartThings, Google Home |
What are Home Assistant Operating System and openHAB?
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
openHAB
openHAB is a vendor-neutral, open-source home automation platform that integrates many devices and technologies behind one system. It targets smart home enthusiasts wanting deep configurability. It is deployed via Docker or native packages.
- Hundreds of device bindings
- Powerful rule engine
- Runs fully offline
- Cross-platform
Home Assistant Operating System vs openHAB: key differences
Home Assistant Operating System is written in Python, while openHAB is built with Java. Licensing differs — Apache-2.0 for Home Assistant Operating System versus EPL-2.0 for openHAB. OpenHAB is the more established project (first released 2010), while Home Assistant Operating System arrived in 2019. Home Assistant Operating System has the considerably larger community, at 7,492 GitHub stars versus 1,142. OpenHAB lists first-class Docker deployment; Home Assistant Operating System does not.
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 openHAB if…
- Very flexible
- Vendor neutral
- Mature project
Watch out for
- Steep learning curve
- Heavier Java runtime
Frequently asked questions
Is Home Assistant Operating System or openHAB better?
Home Assistant Operating System is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider openHAB if its specific feature set fits your needs better.
Are Home Assistant Operating System and openHAB free and open-source?
Yes. Home Assistant Operating System is licensed under Apache-2.0 and openHAB under EPL-2.0. Both can be self-hosted at no software cost.
Can I run Home Assistant Operating System and openHAB with Docker?
Home Assistant Operating System: check the project docs for container support. openHAB: yes.