Ubuntu Core

Canonical describes Ubuntu Core as “a minimal, secure, and strictly confined operating system powering devices around the world” and “an immutable embedded Linux OS.” It is built on snaps, described as containerised packages for deploying embedded applications, with the kernel, OS image and applications each updated independently and protected against corruption.

Updates are delivered over the air, and Canonical pitches it as reliable, remotely accessible and recoverable. It states an up-to-15-year LTS commitment for security maintenance.

Certified hardware partners named on the page include AMD, ARM, Intel, MediaTek, NVIDIA, Qualcomm and Renesas. Whether updates are transactional or automatic is not stated on the page consulted; read the Ubuntu Core documentation for the exact update and rollback behaviour.