The world of mapping and presenting data sets through geographical representations is no longer relegated to GIS librarians and highly trained technologists. New free and open source applications now make it possible to create complex and robust data visualizations in the form of maps that display statistics and poll results. Here’s a guide to 20 free applications and data sources.

via Do-It-Yourself GIS: 20 Free Tools & Data Sources for Creating Data Maps | Ellyssa Kroski – OEDB.org.

There are 6 data visualization tools listed and 14 sources for GIS mapping data.

Also see my list of Interactive Mapping Resources on The Modern MLIS. I have categorized resources as either digital libraries, visualization tools or stargazing maps. There is only a little overlap with Ellyssa’s list.

You may also like:  Ten Places to Find and Create Data Visualizations | FreeTech4Teachers