Online Collaboration Tools

Rallypoint - Online Collaboration
Currently beta now. Support much stuff as Confluence. WYSIWYG. Free accounts available.


Synchronous Editing for the Web
Currently alpha now. Open source. Uses various of different technology. Sandbox for alpha accounts available. Can edit document with other SIMULTANEOUSLY, in REAL TIME. Cool.


writely
Free accounts. Can edit document simultaneously with others, although not realtime.


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