Hass.io OS based on buildroot. It's a hypervisor for Docker and supports various kind of IoT hardware. It is also available as virtual appliance. The whole system is optimized for embedded system and security. You can update the system simple with OTA updates or offline updates.
- Barebox as bootloader on EFI
- U-Boot as bootloader on IoT
- Linux/Buildroot LTS
- RAUC for OTA updates
- SquashFS LZ4 as filesystem
- Docker-CE
- AppArmor protected
- ZRAM LZ4 for /tmp, /var, swap