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Chrome OS is an operating system based on the Linux kernel and designed by Google to work with web applications and installed applications. Initially, Chrome OS was almost a pure web thin client operating system, with only a handful of "native" applications, but Google gradually began encouraging developers to create "packaged applications", some of which can work offline. In 2014, Google upgraded its Chrome Web Store standards for packaged applications, requiring that these applications work offline. Around the same time, Google also announced that Chrome OS would gain the ability to run Android applications natively, by late 2014. In September 2014, App Runtime for Chrome (beta) was launched together with four Android applications being able to run on Chrome OS. Chrome OS is built upon the open source project called Chromium OS〔 which, unlike Chrome OS, can be compiled from the downloaded source code. Chrome OS is the commercial version installed on specific hardware from Google's manufacturing partners. Initial Chromebook shipments from Samsung and Acer occurred in July 2011. Chrome OS will be folded into Android by 2017. ==History== Google announced Chrome OS on July 7, 2009, describing it as an operating system in which both applications and user data reside in the cloud. To ascertain marketing requirements, the company relied on informal metrics, including monitoring the usage patterns of some 200 Chrome OS machines used by Google employees. Developers also noted their own usage patterns. Matthew Papakipos, former engineering director for the Chrome OS project, put three machines in his house and found himself logging in for brief sessions: to make a single search query or send a short email. On November 19, 2009, Google released Chrome OS's source code as the Chromium OS project. As with other open source projects, developers can modify the code from Chromium OS and build their own versions, whereas Chrome OS code is only supported by Google and its partners and only runs on hardware designed for the purpose. Unlike Chromium OS, Chrome OS is automatically updated to the latest version.〔(【引用サイトリンク】title=Developer FAQ )〕 At a November 19, 2009 news conference, Sundar Pichai, at the time Google's vice president overseeing Chrome, demonstrated an early version of the operating system. He previewed a desktop which looked very similar to the Chrome browser, and, in addition to the regular browser tabs, also had application tabs, which take less space and can be pinned for easier access. At the conference, the operating system booted up in seven seconds, a time Google said it would work to reduce.〔 Also on November 19, 2009, Chris Kenyon, vice president of OEM services at Canonical Ltd, announced that Canonical was under contract to contribute engineering resources to the project with the intent to build on existing open source components and tools where feasible. By February 2010, Google switched its development Linux distribution for Chrome from Ubuntu to Gentoo Linux in order to use that distribution's Portage package management system, which, according to sources at Google, is used with "Google's own take on the vanilla Linux kernel". The launch date for retail hardware featuring Chrome OS was delayed from late 2010 to June 15, 2011. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Chrome OS」の詳細全文を読む スポンサード リンク
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