From Juice Labs, this is a favorite tool for improving Excel and PowerPoint with HTML5 goodness. Use the filters to find the right chart type for your needs. Then download as Excel or PowerPoint templates and insert your own data.
Graphviz is open source graph visualization software. Graph visualization is a way of representing structural information as diagrams of abstract graphs and networks.
An Open Source vector graphics editor, with capabilities similar to Illustrator, CorelDraw, or Xara X, using the W3C standard Scalable Vector Graphics (SVG) file format.
StatSilk offers a range of web-based and desktop software to cater to diverse mapping and visualization needs. Our software has a common purpose: to make data analysis easy, efficient and enjoyable.
Tulip is an information visualization framework dedicated to the analysis and visualization of relational data. Tulip aims to provide the developer with a complete library, supporting the design of interactive information visualization applications for relational data that can be tailored to the problems the developer is addressing.
Visual.ly is working to create web-based data visualization software that will help you create data visualizations quickly and easily -- software that’s as intuitive as using a vector program but tailored for data visualization.