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Mindtouch Deki - http://www.mindtouch.com/
Enterprise collaboration and community platform that enables users to connect and remix enterprise systems, social tools and web services. |
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CCF (Collaborative Computing Frameworks) - http://www.mathcs.emory.edu/ccf/
A suite of software systems, communications protocols, and tools that enable collaborative work for natural sciences research, "collaboratories". |
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NCSA Habanero - http://www.isrl.uiuc.edu/isaac/Habanero/
framework designed to give developers the tools they need to create collaborative Java applications. The framework provides the necessary methods that make it possible to create or transition existing applications and applets into collaborative applications. |
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iPoint Portal - http://www.ipointportal.com/
Free collaboration portal supporting several Web 2.0 collaboration features including content management, wikis, blogs, RSS syndication, forums, documents sharing and calendars. |
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http://samba.anu.edu.au/gnuotes/ - http://samba.anu.edu.au/gnuotes/
free software workalike of Lotus Notes |