Opengrey

OpenGrey (opengrey.eu) is a European repository of grey literature — research documents, reports, theses, conference papers, and other materials that are not commercially published but are produced by government agencies, research institutions, universities, and international organizations.

For OSINT investigators, grey literature represents a significant intelligence source that is systematically underutilized compared to formal academic and journalistic sources. Government agency reports, parliamentary research documents, internal studies, technical assessments, and policy documents provide original analysis and data that commercial publishers do not produce.

OpenGrey's coverage of European institutional grey literature makes it particularly relevant for investigations involving EU institutions, European national governments, international organizations headquartered in Europe (WHO, IAEA, NATO-affiliated bodies), and academic institutions in Europe.

For due diligence and corporate intelligence investigations, government reports assessing specific industries, regulatory analysis of business sectors, and parliamentary research about specific companies or issues may provide intelligence about investigation targets that appears nowhere else.

Scientific and technical reports in OpenGrey provide original research data — useful when investigating specific technical claims, product efficacy, environmental impacts, or scientific controversies where peer-reviewed literature may be sparse but institutional research exists.

Policy research in OpenGrey's collection includes analyses from think tanks, government research offices, and international bodies that inform regulatory decision-making. This policy-level intelligence is relevant for understanding the regulatory environment around subjects of investigation.

For historical investigations, grey literature preserved in OpenGrey may document conditions, events, or institutional knowledge from periods before the material was publicly accessible online.

OpenGrey's search interface allows keyword and date-range filtering across its collection, which spans from the 1970s to the present for many contributing institutions.

Document specific reports accessed through OpenGrey with full citation information, access date, and the relevance to the investigation.