R is an open-source software program for statistical analysis that has the ability to create beautiful graphics. The webinar below demonstrates how to use R for data visualization.
Tableau is a visual analytics software designed for creating engaging visualizations. It has an easy-to-learn drag-and-drop interface. Licenses are not yet available through AU but pricing for individuals is reasonable. The tutorial below is an in-depth guide to what the tool can do. (Alternatively, Tableau Public is a free version of the tool that is open and publicly available and allows for the creation of some interactive data visualizations from a spreadsheet or file.)
Gephi is a free graph visualization tool that is most often used for the analysis and visualization of networks. The tutorial below introduces this tool.