Home Assistant is a free, open-source platform that runs on a small computer in your home and controls devices from almost every brand, locally and without a cloud account. Here is what it costs, what you need to start and the products in our catalog that work with it.
People who want every brand in one app, automations that keep working when the internet is down, and do not mind some tinkering.
Home Assistant itself is free. One optional plan adds remote access and voice control.
Formerly Home Assistant Cloud.
USD · checked October 2026 · 31-day free trial
Home Assistant runs on a small computer at home. These are the pieces most setups start with.
The ready-made box that runs Home Assistant: plug it in and open the app.
Adds Zigbee (or Thread), for Zigbee sensors, plugs and bulbs.
Adds Z-Wave, for Z-Wave locks, switches and sensors.
A voice assistant for Assist that can run without the cloud.
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| Home AssistantOpen-source with unlimited possibilities |  AlexaOne of the widest device compatibility ecosystems |  Google HomeSeamless integration with Google services |  Apple HomePrivacy-focused with Apple ecosystem | |
|---|---|---|---|---|
| Voice assistant | Community voice options | Alexa | Google Assistant | Siri |
| Local control | Full | Partial: Matter devices are controlled locally | Partial: Matter devices are controlled locally at home | Partial: your Apple devices control accessories at home; away from home it goes through a home hub |
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| Automation power | ||||
| Ease of setup | ||||
| Community | ||||
| Max devices | Unlimited | ~300 | ~300 | ~150 |
 Wi-Fi | ||||
 Bluetooth | ||||
 Zigbee | ||||
 Z-Wave | ||||
 Thread | ||||
 Matter | ||||
| Best for | Power users & privacy advocates | Voice-first smart home lovers | Android users & Google enthusiasts | Apple users who value privacy |
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Devices from almost every brand, from robot vacuums and cameras to sensors, plugs and locks. Each category on this page links to its full list in our catalog.
Yes. Home Assistant is free and open source. You pay for the computer it runs on and, if you want it, for Home Assistant Link, which adds remote access and Alexa and Google voice control.
You need a computer to run it on: a Home Assistant Green, a mini PC or a Raspberry Pi. Zigbee, Z-Wave and Thread devices also need a radio for that protocol, such as the Connect ZBT-2 or the Connect ZWA-2.
Yes. Home Assistant can share its devices with Alexa and Google Assistant, through Home Assistant Link or with a manual setup, so one voice assistant controls every brand.
Yes. Home Assistant is a Matter controller. Matter devices that use Thread also need a Thread border router.
Yes. It runs on your own computer at home, so devices with a local integration and your automations keep working when the internet is down.
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