01/06/2017 (Fri) 14:27:11
They ship with Linux. ChromeOS is a GNU/Linux distro (Android is Linux, but no GNU).
All Chromebooks support running a proper distro with some chroot magic (crouton), and many of them support replacing ChromeOS completely.
They have a hardware switch to enable a "don't blame us if you break it" mode, which is a really nice way to give security and freedom.
They all come with Coreboot, and one of them even supports Libreboot so you don't need BIOS blobs.
ChromeOS is shit, but the hardware is nice.