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Synchronous collaboration systems - complex, distributed, multi-user environments
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Tango Interactive - framework for building Web-based synchronous collaboration systems
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several types of APIs
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wide array of collaboration tools
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used in distance learning and general collaboration
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Need for tools that would enable faster development of collaboration applications without giving up functionality
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traditional APIs offer full functionality but implementation is difficult
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tools that convert standalone applications to multiuser applications are fast and easy to use but obtained software has limited collaboration functionality
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Proposed solution: software components that can be combined using visual programming tools with ordinary components to create collaborative applications
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