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Gapminder. OpenHeatMap. Tableau public. Factbook eXplorer. Choosel. Protovis. VIDI. NodeXL. World Cloud. Gephi. OpenLayers. Git. OpenStreetMap. InfoVis. Quantum GIS. Data Wrangler. Many Eyes. Exhibit. The R Project. IMPURE. Online Reporting. 22 free tools for data visualization and analysis. Review April 20, 2011 06:00 AM ET Computerworld - You may not think you've got much in common with an investigative journalist or an academic medical researcher.

22 free tools for data visualization and analysis

But if you're trying to extract useful information from an ever-increasing inflow of data, you'll likely find visualization useful -- whether it's to show patterns or trends with graphics instead of mountains of text, or to try to explain complex issues to a nontechnical audience. Cube. Time Series Data Collection & Analysis Cube is a system for collecting timestamped events and deriving metrics.

Cube

By collecting events rather than metrics, Cube lets you compute aggregate statistics post hoc.

Gephi