Dataset Search enables users to find datasets stored across the Web through a simple keyword search. The tool surfaces information about datasets hosted in thousands of repositories across the Web, making these datasets universally accessible and useful.
DataPortals.org is a comprehensive list of global open data portals. It is curated by a group of leading open data experts from around the world - including representatives from local, regional and national governments, international organizations such as the World Bank, and numerous NGOs.
InfoShare brings together dozens of local, state and federal databases describing population, socio-economic and health conditions. It gives this information for a variety of geographic areas, allowing for profiling and comparisons of areas of your choosing.