GalliumOS was a Linux distribution for ChromeOS devices, developed by the community-supported GalliumOS project. The distribution was made for Chrome hardware including Chromebook, Chromebox, Chromebit and Chromebase. GalliumOS beta1 was released on 10 November 2015.
As of 2022, the GalliumOS project has been discontinued. Their wiki advises existing GalliumOS users to migrate to another Linux OS due to security hazards.