There are now many open access repositories around the world. A quality-assured listing of these is maintained by the Open Directory of Open Access Repositories (OpenDOAR – www.opendoar.org/). Staff at OpenDOAR harvest and assign metadata
to the repositories included in their listing so as to allow categorisation and analysis to assist the wider use and exploitation of repositories. At the time of writing (November 2007) the number of organisations hosting repositories included in OpenDOAR was 734 and the breakdown by geographic area was: