PASDA, PA's official public access geospatial information clearinghouse, provides free public access to geospatial data and information by, for, and about the Commonwealth of Pennsylvania.
WPRD hosts datasets from Allegheny County, the University of Pittsburgh and other public sector agencies, academic institutions, and non-profit organizations.
The purpose of Data.gov is to increase public access to high value, machine readable datasets generated by the Executive Branch of the Federal Government.