Digital Archive Systems (DAS) can be used to capture, store, index, preserve, and distribute digital content. Such a system which supports versioning, could potentially provide the same functionality as the Document Management Systems we mentioned earlier.
NITLE is currently running a DSpace pilot: http://b2e.nitle.org/index.php/2006/11/04/nitle_dspace_pilot_service_launched
However, the current releases of DSpace do not support versioning. DSpace 1.4 was released in December 2006. I have come across postings that claim versioning will be available in DSpace 2.0.
FEDORA is an open source DAS that does support versioning.
FEDORA: http://www.fedora.info/