ChromeOS was an operating system that powered Chromebooks, Chromeboxes, tablets, and other devices. Launched June 15, 2011; shutting down June 30, 2034 — it will have lived 23 years. ChromeOS is a proprietary operating system designed and developed by Google. It is derived from the open-source ChromiumOS operating system, and uses the Google Chrome web browser as its principal user interface. Wiki link Data: Killed by Google (killedbygoogle.com, MIT).