|Source model||Open source|
|Update method||Rolling release|
|Platforms||x86, x64, ARM, ARM64|
|Kernel type||Monolithic (Linux kernel)|
|Userland||Ozone (Display manager), X11, GNU|
|Chromium, Aura Shell (Ash)|
|License||Various open source licenses (mainly BSD-style licenses and GPL)|
ChromiumOS is a free and open-source operating system designed for running web applications and browsing the World Wide Web. It is the open-source version of ChromeOS, a Linux-based operating system made by Google.
Like ChromeOS, ChromiumOS is based on the Linux kernel, but its principal user interface is the Chromium web browser rather than the Google Chrome browser. ChromiumOS also includes the Portage package manager, which was originally developed for Gentoo Linux. Because ChromiumOS and ChromeOS use a web browser engine for the user interface, they are oriented toward web applications rather than desktop applications or mobile apps.
Chromium's architecture is three-tiered, consisting of "three major components":
- The Chromium-based browser and the window manager
- System-level software and user-land services: the Linux kernel, drivers, connection manager, and so on
ChromiumOS was first made available in compiled form by hobbyists. More organized efforts have emerged over time, including a few manufacturers that have shipped devices with the operating system pre-installed.
Builds and forks
By May 2010, compiled versions of the work-in-progress source code had been downloaded from the Internet more than a million times. The most popular version, entitled "ChromiumOS Flow", was created by Liam McLoughlin, a then 17-year-old college student in Liverpool, England, posting under the name "Hexxeh". McLoughlin's build boots from a USB memory stick and included features that Google engineers had not yet implemented, such as support for the Java programming language. While Google did not expect that hobbyists would use and evaluate ChromiumOS ahead of its official release, Sundar Pichai, Google's vice president of product management (now the CEO) said that "what people like Hexxeh are doing is amazing to see." Pichai said the early releases were an unintended consequence of open source development. "If you decide to do open-source projects, you have to be open all the way."
Hexxeh's work continued into the following year. He announced "ChromiumOS Lime" in December 2010, and in January 2011, released "Luigi", an application designed to "jailbreak"/"root" the Google Cr-48 "Mario" prototype hardware and install a generic BIOS. The developer made the builds available in virtual machine format on March 13, 2011. With no official build of ChromiumOS forthcoming from Google, Hexxeh's "vanilla" nightly builds of ChromiumOS were the principal resource for people wanting to try ChromiumOS. Hexxeh stopped uploading his builds on April 20, 2013.
More recent versions of ChromiumOS are available from Arnoldthebat, who maintains daily and weekly builds along with usage guidelines and help. In July 2012, Chromium Build Kit was released. It automatically compiles a developer build and installs ChromiumOS on a USB drive.
In 2015, New York City-based Neverware produced a ChromiumOS fork called CloudReady aimed at the educational market, with the intention of extending the life of older PCs and laptops. A subsequent version can dual-boot Neverware and the Windows operating system (until v64). In 2020, Neverware was acquired by Google, and a similar "ChromeOS Flex" was released into beta in February 2022.
In 2016, Nexedi released NayuOS, a fork of ChromiumOS precompiled for several Chromebook computers. The operating system provides ChromeOS-like capabilities without storing data on Google servers. It optionally removes the Google login and provides additional developer tools.
Also in 2016, a London/Beijing-based startup produced a line of ChromiumOS fork named Flint OS, targeting a wider range of platforms, including 64-bit PCs, Raspberry Pi, Tinker Board, Firefly development boards, and VMware virtual machines. The OS was later renamed Fyde OS.
Some devices have shipped with ChromiumOS preinstalled. In May 2011, Dell also released a new build for the Dell Inspiron Mini 10v netbook, following up on an earlier build released almost 18 months earlier. The build did not support audio, but was bootable from a USB drive. Other devices include the Kogan Agora Chromium Laptop by the Australian company Kogan and the Xi3 Modular Computer, introduced by the company of the same name. In late 2015, a team headed by Dylan Callahan released a beta ChromiumOS port to the Raspberry Pi 2 single-board computer. In 2016, Flint Innovations released a ChromiumOS port for the latest Raspberry Pi 3/B model named Flint OS for RPi. Subsequently, this project has been fully open-sourced at GitHub, with all the files and detailed instructions to re-create the build.
In June 2011, ISYS Technologies, based in Salt Lake City, sued Google in a Utah district court, claiming rights to the name "Chromium" and, by default, Chromebook and Chromebox. The suit sought to stop Google and its hardware and marketing partners from selling Chromebooks. The suit was later dismissed and, as part of an undisclosed settlement between Google and ISYS, ISYS abandoned its trademark efforts.
- Android (operating system)
- App Runtime for Chrome
- Chromium (web browser)
- Google Fuchsia
- Firefox OS
- Google Chrome
- Webconverger – an operating system based on Firefox
- Gentoo Linux
- Womack, Brian (July 8, 2009). "Google to Challenge Microsoft With Operating System". Bloomberg.com. Retrieved July 8, 2009.
- "Kernel Design: Background, Upgrades". Retrieved September 7, 2011.
- "Licenses - the Chromium Projects". Archived from the original on July 1, 2018. Retrieved April 30, 2017.
- Vaughan-Nichols, Steven J. "The secret origins of Google's Chrome OS". ZDNet. Retrieved March 13, 2019.
- "Kernel Design". The Chromium Projects.
- Bligh, Martin (December 11, 2009). "What's the Difference Between Chromium OS and Google Chrome OS?". Chromium Blog. Retrieved June 11, 2018.
- "Software Architecture - The Chromium Projects". www.chromium.org. Retrieved January 25, 2016.
- Stone, Brad (May 7, 2010). "Test Flights Into the Google Cloud". New York Times.
- Hexxeh. "Now with a citrus twist". Hexxeh's Blog. Retrieved June 30, 2011.
- Hexxeh. "Your princess is in another castle…". Hexxeh's Blog. Retrieved June 30, 2011.
- Hexxeh. "In my VirtualBox?". Hexxeh's Blog. Retrieved June 30, 2011.
- "Chromium OS Builds". Chromium.arnoldthebat.co.uk. Retrieved July 4, 2014.
- "Home". arnoldthebat.co.uk.
- "ArnoldTheBats World of Whimsy". ArnoldTheBats.
- Chromium Build Kit (July 30, 2012). "Chromium Build Kit-- Source Forge". Retrieved July 30, 2012.
- Popper, Ben (February 16, 2016). "How schools around the country are turning dead Microsoft PCs into speedy Chromebooks". The Verge. Retrieved February 22, 2016.
- Bishop, Nicholas (November 13, 2015). "ChromiumOS: The Whirlwind Tour". Neverware. Retrieved February 22, 2016.
- Cunningham, Andrew (February 17, 2016). "Chrome OS distro for regular PCs can now dual-boot with Windows". Ars Technica. Retrieved February 22, 2016.
- Cunningham, Andrew (February 16, 2022). "Chrome OS Flex is an ideal off-ramp for millions of PCs that can't run Windows 11". Ars Technica. Retrieved February 18, 2022.
- Proven, Liam (February 16, 2022). "Google announces Chrome OS Flex for ordinary PCs, Macs". The Register. Retrieved February 20, 2022.
- "NayuOS". www.nayuos.com. Retrieved February 22, 2016.
- "Download Flint OS images". Flint OS. Archived from the original on September 22, 2017. Retrieved September 22, 2017.
- "FydeOS is a Chrome OS fork aimed at China, and it brings Android app support". XDA Developers. October 6, 2018. Retrieved March 26, 2019.
- "Wayne OS". wayne-os.com. Retrieved September 5, 2022.
- Kogan Australia. "Laptops - Kogan.com". Kogan Australia. Archived from the original on June 6, 2011. Retrieved June 19, 2011.
- Joanna Stern. "Xi3 Modular Computer is one cool-looking desktop in a cube". Engadget. AOL.
- Dana Wollman. "Xi3 modular PC reborn as Chrome OS desktop, promises independence from local storage". Engadget. AOL.
- Nestor, Marius (December 9, 2015). "Chromium OS for Raspberry Pi 2 Gets Faster Boot Times, Download Now". Softpedia. Retrieved January 25, 2016.
- overlay-rpi: Chromium OS portage overlay for Raspberry Pi, Flint Innovations, September 21, 2017, retrieved September 22, 2017
- "Chrome Turf War: Did Google abandon the Chromium Trademark?". June 13, 2011. Retrieved February 4, 2014.