This is often termed groupware support and Lotus Notes is best known corporate product
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Collaboration implies sharing of electronic objects and is needed in asynchronous and synchronous modes
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AOL Yahoo etc. have Internet games which illustrate one sophisticated form of collaboration
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Chat rooms are perhaps most popular and are simplest synchronous tool. White boards next most popular
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Asynchronous mode is
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shared web pages and documents (these are be shared synchronously or asynchronously)
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electronic mail, event calendars, bulletin boards
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http://www.npac.syr.edu/tango/ is a collaboration system supporting synchronous sharing of events where events signify changes in objects
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