Google Inc., a technology company, maintains an index of Web sites and other online content for users, advertisers, and Google network members and other content providers. It offers AdWords, an auction-based advertising program; AdSense program, which enables Web sites that are part of the Google Network to deliver ads from its AdWords advertisers; Google Display, a display advertising network that comprises the videos, text, images, and other interactive ads; DoubleClick Ad Exchange, a real-time auction marketplace for the trading of display ad space; and YouTube that provides video, interactive, and other ad formats for advertisers. The company also provides Google Mobile that optimizes Google’s applications for mobile devices in browser and downloadable form, as well as enables advertisers to run search ad campaigns on mobile devices; and Google Local that provides local information on the Web. In addition, it offers Android, an open source mobile software platform; Google Chrome OS, an open source operating system; Google Chrome, a Web browser; Google+ to share different things online with different people; Google TV, a platform for the consumers to use the television and the Internet on a single screen; and Google Books platform to discover, search, and consume content from printed books online. Further, the company provides Google Apps, a cloud computing suite of message and collaboration tools, which primarily includes Gmail, Google Docs, Google Calendar, Google translate, and Google Sites; Search Appliance, a search technology for use within enterprises; Google Site Search, a custom search engine; Google Commerce Search for online retail enterprises; Google Maps Application Programming Interface for businesses; and Google Earth Enterprise, a firewall software solution for imagery and data visualization. Google Inc. was founded in 1998 and is headquartered in Mountain View, California.