Basic architectures
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Event broadcasting: each workstation runs its own copy of application.
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(A) Virtual instance: all events shared (collaboration transparency)
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(B) Independent data views: some events shared
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Examples: Habanero (NCSA - B), Java Collab. Toolset (Old Dominion - A ), ProMondia (Univ. of Nuremberg - B), UARC (Univ. of Michigan - B), TANGO (NPAC - B)
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Disadvantages: new category of SW, difficult to implement
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Advantages: infinitely flexible and adaptable, generates little network traffic, perfectly fit Web/Java paradigm, can implement security, can support asynchronous collaboration....
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