Gapminder converts over 500 development indicators (at the national level) into interactive and dynamic charts and maps.
Infogr.am (Basic/Free Version) This web-based application allows you to easily create charts and maps using your own data.
DataHero (Free Version) For large datasets, try this web-based data visualization tool.
Tableau (Public/Free Version) For really big datasets, download this data visualization tool to create interactive visualizations of your own data which can be embedded in a website or shared.
Google Fusion Tables an experimental data visualization web application to gather, visualize, and share data.
Voyant allows you to quickly visualize and analyze text.
Mapping Tools and Interactive Maps
Policy Map Created by a nonprofit organization called The Reinvestment Fund, PolicyMap is an easy to use mapping database with a wide range of data.
Social Explorer Create maps on a variety of subjects with data from decades of U.S. censuses.
Census Explorer The U.S. Census Bureau's interactive mapping website for mapping demographic information. Easy to use!
Measure of America Quickly create maps based on the American Human Development Index, an alternative to GDP and other money metrics. The Index is comprised of health, education, and income indicators and allows for well-being rankings of the 50 states, 436 congressional districts, county groups within states, women and men, and racial and ethnic groups. A project of the Social Science Research Council.
TOXMAP from US National Library of Medicine, allows users to visually explore data from the US Environmental Protection Agency (EPA)'s Toxics Release Inventory (TRI) and Superfund Program, as well as some non-EPA datasets.
GeoFred is an awesome mapping tool for primarily economic data, hosted by the Federal Reserve Bank of St. Louis. It includes national and international data.
Healthy City allows users to map California economic, housing and demographic data and to "tell their own story" by uploading their own data or multimedia. Note: not all datasets are current.
PPIC Map Room from the Public Policy Institute of California, provides access to both interactive and static California maps on a wide range of issues.
ReferenceUSA allows you to create heat maps of businesses based on specific criteria.
American Panorama a digital atlas of United States history, created by the Digital Scholarship Lab at the University of Richmond. The atlas is an ongoing project, with more maps being added as they are completed. Some highlights of the atlas are as follows:
ArcGIS Online Sign-up for a free ArcGIS Online account from the GIS industry leader, Esri. This is a paired-down version of the desktop application. For the full desktop ArcGIS package, access it at Gleeson Library or contact USF's Geospatial Analysis Lab (GSAL).
CrowdMap Open-source software developed by the non-profit software company, Ushahidi - pioneers in the world of "activist mapping"