Google Inc. is an American multinational public corporation invested in Internet search, cloud computing, and advertising technologies. Google hosts and develops a number of Internet-based services and products, and generates profit primarily from advertising through its AdWords program. In 2006, the company moved to its current headquarters in Mountain View, California.

Google's rapid growth since its incorporation has triggered a chain of products, acquisitions, and partnerships beyond the company's core web search engine The company offers online productivity software, such as its Gmail email service, and social networking tools, including Orkut and, more recently, Google Buzz. Google's products extend to the desktop as well, with applications such as the web browser Google Chrome, the Picasa photo organization and editing software, and the Google Talk instant messaging application. 

 In 2005 Google purchased Android Inc. and took over the development of the Android mobile operating system which is based on a modified version of the Linux kernel. Android offers the full Google experience which means you will have access to your GMailGoogle Talk, Google Maps and a whole range of Google applications directly from your smartphone. You can also download application to your device from the Android Marketplace. Android devices are released by various manufactures. Since Android is highly customizable, manufacturers generally add their own customized skin giving the users a a unique experience.
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Chrome OS is a cloud based operating system built on top of a linux kernal and works exclusively with web applications. Google first announced the operating system on July 7, 2009. It was first launched on June 15, 2011 on ChromeBooks designed by Acer and Samsung.