[toddnni]

I have been looking for a Document Management System, and I would like to understand how does this compare to other open alternatives like dSpace.

I would favor older and more established project, but maybe I'm focusing too much in Document Management and haven't thought about the collaboration aspect. PaperNIC might be better there.

[bensummers]

If you've been looking at things like DSpace, take a look at my company's open source information management platform: http://haplo.org/

Very strong on metadata, good file handling, integrated workflow, extensive API for scripting.