Gentoo Linux derivatives

ChromeOS (sometimes styled as chromeOS and formerly styled as Chrome OS) is a proprietary operating system designed and developed by Google. It is derived from the open-source operating system (which itself is derived from Gentoo Linux), and uses the Google Chrome web browser as its principal user interface.

Linux distribution

ChromiumOS (formerly styled as Chromium OS) is a free and open-source Linux distribution designed for running web applications and browsing the World Wide Web. It is the open-source version of ChromeOS, a Linux distribution made by Google.

Ututo was a Linux distribution consisting entirely of free software. The distribution is named for a variety of gecko found in northern Argentina.

Cuban state-sponsored Linux distribution

Pentoo is a Live CD and Live USB designed for penetration testing and security assessment. Based on Gentoo Linux, Pentoo is provided both as 32 and 64-bit installable live CD. Pentoo is also available as an overlay for an existing Gentoo installation. It features packet injection patched Wi-Fi drivers, GPGPU cracking software, and many tools for penetration testing and security assessment. The Pentoo kernel includes grsecurity and PAX hardening and extra patches - with binaries compiled from a hardened toolchain with the latest nightly versions of some tools available.

Linux distribution