1.Openicpsr.org
openICPSR is a research data-sharing service for social and behavioral sciences. It allows the public to access research data at no charge. openICPSR assists researchers in meeting requirements for public access to federally funded research data. It ensures that data depositors fulfill public-access requirements of grant and contract RFPs. It is available to any researchers who wish to make their data available to the public via a sustainable archive.