Policy Commons is a platform for grey literature. The module 'Global Think Tanks' has objective, fact-based research from the world’s leading policy experts, nonpartisan think tanks, IGOs and NGOs. The module 'World Cities' has millions of rare and hard-to-find reports, surveys, and research reports from cities and local urban agencies around the world. Until December 2025 we also provide trial access to the module 'Local Governments.'
ICPSR (Inter-University Consortium for Political and Social Research) maintains a data archive of more than 250,000 files of research in the social sciences. It hosts 21 specialized collections of data in education, aging, criminal justice, substance abuse, terrorism, and other fields.
The institutional memory of the World Bank Group providing public access to its documentary heritage. Digitized materials and engaging discovery tools include Country Historical Profiles, Projects and Operations Portal, a Historical Timeline, Oral History Program, and more.