ChromeOS Flex
ChromeOS Flex, developed by Google, is a free and lightweight Linux distribution based on Gentoo-derived ChromeOS. Unlike ChromeOS which is designed specifically for Chromebook computers, ChromeOS Flex can be installed on most x86_64 devices with a AMD or Intel processors, offering a Chromebook-like experience.
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MagOS Linux
MagOS Linux is a Russian desktop-oriented distribution based on ROSA, a distribution that was forked from Mandriva Linux in 2011. It uses the RPM package management.