Microdata

Borealis, the Canadian Dataverse Repository (formerly Dataverse), is a research data portal hosted by Scholars Portal on behalf of Ontario universities. Researchers can use Borealis to share their data, as well as discover and reuse the data produced by other researchers.

The Map and Data Library Dataverse contains both microdata and aggregated statistical tables. While much of this collection is openly available, some of these datasets are licensed and restricted for noncommercial use by the University of Toronto community.

The UK Data Service is a comprehensive resource funded by the ESRC to support researchers, teachers and policymakers who depend on high-quality social and economic data.

Dataverse is an open source application to publish, share, reference, extract and analyze research data. It facilitates making data available to others, and allows you to replicate others work.

Wharton Research Data Services (WRDS) provides access to a variety of business data, including financial, economic, and marketing data. WRDS provides access to COMPUSTAT, CRSP, IBES, NYSE-TAQ, Bureau van Dijk, Global Insight, OptionMetrics and other important business research databases.

iPOLL is the search interface to the public opinion data housed at the Roper Center for Public Opinion Research, located at Cornell University. The Roper Center is one of the world's leading archives of social science data, specializing in data from public opinion surveys.

IHS Global Insight (aka DataInsight web) is a browser-based data navigation and retrieval tool providing access to time series from numerous Global Insight databanks covering economic, financial, and demographic statistics.

IPUMS provides census and survey data from around the world integrated across time and space. Specific projects include IPUMS-USA, IPUMS-International, IPUMS-CPS (Current Population Survey), and IPUMS-NHGIS (National historical GIS). All are available from the link below.