CDSware (Popularity: )
http://cdsware.cern.ch/ An OAI-compliant software for document servers developed at CERN and licensed under GNU General Public License (GPL). Allows institutions to build their own electronic library and to make it accessible ...
The Open Citation Project (Popularity: )
http://opcit.eprints.org/ OpCit. Project funded by the Joint Information Systems Committee, whose aim is to develop a citation-linking system to navigate through Open Archives.
DSpace (Popularity: )
http://www.dspace.org/ An Open Archive Initiative (OAI) - compliant open-source software released by MIT for archiving eprints and other kinds of academic content. Mission, policy, technical features, implementations.
Open Archives Initiative (Popularity: )
http://www.openarchives.org/ The Open Archive community. Promotion of interoperability standards that aim to facilitate the dissemination of content, by enhancing access to e-print archives. Online documents, links and forums.
MAGiC Project (Popularity: )
http://www.magic.ac.uk/ An initiative aiming to establish a new collaborative system for the collection, storage and utilisation of engineering grey literature.