From the DOAR site:
"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."
"The project is a joint collaboration between the University of Nottingham in the UK and the Lund University in Sweden. Both institutions are active in supporting Open Access development. Lund operates the Directory of Open Access Journals (DOAJ), which is known throughout the world."