Electronic Document Management System (Score 2, Interesting)

I know this is slightly off-topic, but I wonder if anyone is aware of an open-source Electronic Document Management System (EDMS). The specification for CVS/Source Control and a EDMS are very similar:

- Document profiles
- Full text indexing of all documents regardless of file type
- Combined searching of both profile and full-text index
- Integration with major software applications
- Individual document security and the ability to secure whole categories (e.g. financial information)
- Version control
- Audit trail to see who has (accessed / changed / checked-out / printed) documents
- Reporting on documents (all documents used by Joe Bloggs, all documents used within last 3 months)
- Check-in/Check-out of documents
- Local copies (Mirroring) so that you do not need a network connection (allowing laptop use)
- Web-access to all documents

I wonder if anyone knows of such a system?