ICPSR (Inter-university Consortium for Political and Social Research)
NOTE: users need to create a personal account to download data and documents. An international consortium of more than 750 academic institutions and research organizations, ICPSR maintains a data archive of more than 250,000 files of research in the social sciences. It hosts 21 specialized collections in education, aging, criminal justice, substance abuse, terrorism, and other fields from various countries. Qualitative studies can be downloaded as text documents while quantitative data can be downloaded as CSV files.