OpenDOAR Directory of Open Access Repositories
OpenDOAR is an authoritative directory of academic open access repositories. Each of these repositories collects, preserves, and disseminates the intellectual output of an institution via the Internet. Materials in a given repository can contain virtually any electronic file including article preprints and postprints, theses and dissertations, course notes, data and image collections, technical reports, and working documents.
As well as providing a simple list of repositories, Open DOAR lets one search or browse for repositories or search documents in all repositories contents with a single query (metasearch). The characteristics of the various repositories, such as repositories by country can be viewed as statistical charts. A list of Updates and Additions is available.
Depends on source repositories.