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.'