Chromium OS vs Funtoo

Since you only have the browser, you cannot install applications (outside Chrome Apps which are decently protected by their limited API and the Chrome Web Store). This means no harmful virus, and also nearly no way you can screw your system. Everything will just work.

Chromium's system UI uses as little screen space as possible by combining apps and standard web pages into a minimal tab strip: While existing operating systems have web tabs and native applications in two separate strips, Chromium OS combines these, giving access to everything from one strip. The tab is the equivalent of a desktop application's title bar; the frame containing the tabs is a simple mechanism for managing sets of those applications and pages.

Because Chromium OS is designed for users who spend most of their computer time on the Web, it is intended for use in computers with little local storage and fast boot-up times.

The profile system improves portage's usability without losing the soul of Gentoo.

It allows selecting, for example, gnome or desktop profile with most of the sane use flags enabled inside the profile.

This allows more fine-grained control over package updates, and packages can be now tied together inside the kit to minimize dependency breakage while upgrading.

A tool to update your grub config.

Customized to a variety of CPU microarchitecture variants from AMD, ARM, and Intel.

It's a sophisticated replacement for Gentoo's build tool 'catalyst'.

THis makes updates so much faster!