A product called O3Spaces Workplace is gaining momentum in the collaboration software field. The product is being positioned as a direct competitor to MS SharePoint Office Server focusing on document management and collaboration. The open edition should be available at some point during 2007 both on Windows and Linux platforms. From the available demos and documentation it surely seems to be an excellent competitor for SharePoint bringing in as well nice integration with OpenOffice tools. For further info (and even a vmware image demo) you can find more info at http://www.o3spaces.com
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