# Home Assistant OS

> The operating system made to run Home Assistant, with the Supervisor, apps, and backups. The recommended way to install Home Assistant.

Source: https://contributors.home-assistant.io/glossary/home-assistant-os/

- In code: `home-assistant/operating-system`, `hassos`
- Also: operating system, OS

Home Assistant OS runs on devices like Home Assistant Green and Raspberry Pi, and in virtual machines. It updates itself, and is built in the home-assistant/operating-system repository.

## Related terms

- [Supervisor](https://contributors.home-assistant.io/glossary/supervisor/): The part of Home Assistant OS that runs Home Assistant Core and apps, each in its own container, and handles their updates and backups.
- [App](https://contributors.home-assistant.io/glossary/app/): Extra software that runs next to Home Assistant on Home Assistant OS, like an MQTT broker or a file editor.
- [Installation type](https://contributors.home-assistant.io/glossary/installation-type/): How Home Assistant is installed: Home Assistant OS, or Home Assistant Container. They differ in what is managed for you.