Directory of Open Access Repositories - OpenDOAR

"The OpenDOAR service is being developed to support the rapidly emerging movement towards Open Access to research information. This will categorise and list the wide variety of Open Access research archives that have grown up around the world. Such repositories have mushroomed over the last 2 years in response to calls by scholars and researchers worldwide to provide open access to research information. 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. This can be of use both to users wishing to find original research papers and for third-party "service providers", like search engines or alert services, which need easy to use tools for developing tailored search services to suit specific user communities...