OpenDOAR - Directory of Open Access Repositories
Lund and Nottingham universities have collaborated on a new directory of open access repositories: "OpenDOAR is building a comprehensive and authoritative list of institutional and subject-based repositories, as well as archives set up by funding agencies - like the National Institutes for Health in the USA or the Wellcome Trust in the UK and Europe. Users of the service are able to analyse repositories by location, type, the material they hold and other measures."