dygraphs is a free charting library that allow you to create interactive, zoomable charts of present ..
Gliffy is a free web based flowcharts and diagrams editor that allow you to create professional quality ..
core-plot is a free and open source Cocoa plotting library for Mac OS X and iPhone/iPod Touch applications. ..
MilkChart is a free and easy to use yet robust MooTools based graph/chart library that allow you to generate ..