Allowing multiple users to simultaneously edit a Word document

I am trying to find a way to allow multiple users to simultaneously edit a word document - much the same way that they can in Google Docs.

Does anyone know of any product that would allow this functionality?
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rcalusteConnect With a Mentor Commented:
You would want to use Sharepoint with that. Here's an article that explains how to set up Sharepoint to enable document collaboration in your organization.

Word 2003 content creation collaboration with Windows SharePoint Services
Plutext allows for simultaneous editing (currently in development) -
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