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AOL Instant Messenger (AIM) is an instant messaging and presence computer program which uses the proprietary OSCAR instant messaging protocol and the TOC protocol to allow registered users to communicate in real time. AIM became incredibly popular in the early 2000s in North America, and was the leading instant messaging application in that region. AIM's popularity steeply degraded at the end of the decade, and its fall has often been compared with other once-mighty internet services such as MySpace.〔http://mashable.com/2014/04/15/aim-history/#1uqNLAeOsgqn〕 It has not been in development since 2012. ==History== AOL Instant Messenger was released by America Online (AOL) in May 1997 for Microsoft Windows.〔Abbruzzese, Jason. ("The Rise and Fall of AIM, the Breakthrough AOL Never Wanted" ). Mashable.com. 2014-04-05.〕 The software, maintained by AOL, Inc., at one time had the largest share of the instant messaging market in North America, especially in the United States (with 52% of the total reported ). This does not include other instant messaging software related to or developed by AOL, such as ICQ and iChat. Its main competitors during its heyday were ICQ, Yahoo! Messenger and MSN Messenger. AOL particularly had a rivalry or 'chat war' with rival Microsoft starting in 1999. There were several attempts from Microsoft to simultaneously log into their own and AIM's protocol servers. AOL were not happy about this and started blocking MSN Messenger from being able to access AIM.〔http://www.theverge.com/2014/4/21/5635488/msn-messenger-vs-aol-aim-chat-wars〕〔https://nplusonemag.com/issue-19/essays/chat-wars/〕 AIM went officially mobile in early 2008 when the application was released for Windows Mobile devices.〔http://download.cnet.com/blog/download-blog/aims-windows-mobile-chat-app-nails-a-bullseye/〕 However AIM could already be used on various devices beforehand with third-party applications, and as early as 2002 on a Sidekick.〔http://bgr.com/2007/10/02/mobile-im-clients-sidekick-helio-ocean-blackberry-iphone-and-more/〕 Since 2012, stand-alone official AIM client software includes advertisements and is available for Microsoft Windows, Windows Mobile, Mac OS, Mac OS X, Android, iOS, BlackBerry OS. 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「AOL Instant Messenger」の詳細全文を読む スポンサード リンク
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