"This program is intended to make working with the Generic Mapping Tools (GMT) easier. iGMT provides a graphical user interface for GMT and is written in the Tcl/Tk computer language. Besides supplying a user friendly way of handling GMT, iGMT comes with built-in support for many different geoscientific data sets, such as topography, gravity, seafloor age, hypocenter catalogs, plate boundary files, hotspot lists, CMT solutions etc."
An interactive mapping tool with a built in datasets.
"The GeoNames geographical database is available for download free of charge under a creative commons attribution license. It contains over eight million geographical names and consists of 6.5 million unique features whereof 2.2 million populated places and 1.8 million alternate names. All features are categorized into one out of nine feature classes and further subcategorized into one out of 645 feature codes. The data is accessible free of charge through a number of webservices and a daily database export. GeoNames is already serving up to over 11 million web service requests per day. "
"Datamob highlights the connection between public data sources and the interfaces people are building for them. Our listings emphasize the connection between data posted by governments and public institutions and the interfaces people are building to explore that data."
There is a wide selection of innovative maps, datasets, and data visualization interfaces drawing on a variety of topics. You can spend quite some time going through the offerings here!
The Illinois Department of Public Health has an excellent dataset generator for every Illinois county and MSA across the state. In addition to disease and mortality statistics, you can integrate a wide variety of related demographic and socioeconomic data.