COAR Interoperability Roadmap: Future Directions for Repository Interoperability — (PDF of the report)
COAR Report: A Case for Interoperability — (PDF to full report)
COAR Report: The Current State of Repository Interoperability (2012) — (PDF to full report)
Data.Gov In — Open Government Data (OGD) Platform India
OpenDOAR — The Open Directory of Open Access Repositories (OpenDOAR) provides a listing of open access repositories around the world that have been reviewed for quality.
USAID Development Data Library (DDL) — Gateway to USAID-funded, machine-readable data.
USDA-NAL — U.S. Department of Agriculture - Ag Data Commons
World Bank Micro Data — The Microdata Library is a collection of datasets from the World Bank and other international, regional and national organizations.