Twitter ( / ˈ t w ɪ t ər / ) is an online news and social networking service where users post and interact with messages, "tweets", restricted to 140 characters . Registered users can post tweets, but those who are unregistered can only read them. Users access Twitter through its website interface, SMS or a mobile device app . [10] Twitter Inc. is based in San Francisco , California , United States , and has more than 25 offices around the world. [11] Twitter was created in March 2006 by Jack Dorsey , Noah Glass , Biz Stone , and Evan Williams and launched in July of that year. The service rapidly gained worldwide popularity. In 2012, more than 100 million users posted 340 million tweets a day, [12] and the service handled an average of 1.6 billion search queries per day. [13] [14] [15] In 2013, it was one of the ten most-visited websi...
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Facebook is an American for-profit corporation and an online social media and social networking service based in Menlo Park, California . The Facebook website was launched on February 4, 2004, by Mark Zuckerberg , along with fellow Harvard College students and roommates, Eduardo Saverin , Andrew McCollum , Dustin Moskovitz , and Chris Hughes . [6] [7] The founders had initially limited the website's membership to Harvard students; however, later they expanded it to higher education institutions in the Boston area , the Ivy League schools, and Stanford University . Facebook gradually added support for students at various other universities, and eventually to high school students as well. Since 2006, anyone who claims to be at least 13 years old has been allowed to become a registered user of Facebook, though variations exist in the minimum age requirement, depending on ap...
Microsoft Corporation
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Microsoft Corporation ( / ˈ m aɪ k r ə ˌ s ɒ f t / , [2] [3] abbreviated as MS ) is an American multinational technology company headquartered in Redmond, Washington . It develops, manufactures, licenses, supports and sells computer software , consumer electronics , personal computers , and services. Its best known software products are the Microsoft Windows line of operating systems , the Microsoft Office suite , and the Internet Explorer and Edge web browsers . Its flagship hardware products are the Xbox video game consoles and the Microsoft Surface tablet lineup. As of 2016, it is the world's largest software maker by revenue, [4] and one of the world's most valuable companies . [5] Microsoft was founded by Paul Allen and Bill Gates on April 4, 1975, to develop and sell BASIC inter...
Yahoo!
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Yahoo! is a web services provider, wholly owned by Verizon Communications through Oath Inc. [4] [5] and headquartered in Sunnyvale, California . The original Yahoo! company was founded by Jerry Yang and David Filo in January 1994 and was incorporated on March 2, 1995. [6] [7] Yahoo was one of the pioneers of the early Internet era in the 1990s. [8] Marissa Mayer , a former Google executive, served as CEO and President of Yahoo until June 2017. [9] It was globally known for its Web portal , search engine Yahoo! Search , and related services, including Yahoo! Directory , Yahoo! Mail , Yahoo! News , Yahoo! Finance , Yahoo! Groups , Yahoo! Answers , advertising , online mapping , video sharing , fantasy sports, and its social media website. At its height it was one of the most popular sites in the United States. [10] Accordin...
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Google is an American multinational technology company that specializes in Internet -related services and products. These include online advertising technologies, search , cloud computing , software , and hardware . Google was founded in 1998 by Larry Page and Sergey Brin while they were Ph.D. students at Stanford University , in California. Together, they own about 14 percent of its shares, and control 56 percent of the stockholder voting power through supervoting stock . They incorporated Google as a privately held company on September 4, 1998. An initial public offering (IPO) took place on August 19, 2004, and Google moved to its new headquarters in Mountain View, California , nicknamed the Googleplex . In August 2015, Google announced plans to reorganize its various interests as a conglomerate called Alphabet Inc. Google...
Apple Inc.
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Apple Inc. is an American multinational technology company headquartered in Cupertino, California that designs, develops, and sells consumer electronics , computer software , and online services. The company's hardware products include the iPhone smartphone, the iPad tablet computer, the Mac personal computer, the iPod portable media player, the Apple Watch smartwatch, and the Apple TV digital media player. Apple's consumer software includes the macOS and iOS operating systems, the iTunes media player, the Safari web browser, and the iLife and iWork creativity and productivity suites. Its online services include the iTunes Store , the iOS App Store and Mac App Store , Apple Music , and iCloud . Apple was founded by Steve Jobs , Steve Wozniak , and...