Charts

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Get flash to fully experience Pearltrees
http://processingjs.org/learning/basic/ Basic demonstrations of how Processing works, from the Processing.org web site.

Processing.js - demo

JpGraph - Most powerful PHP-driven charts

Supports several plot types,spider-plots, pie-charts (both 2d and 3d) , scatter-plots, line-plots, filled line-plots, accumulated line-plots, bar plots, accumulated bar plots, grouped bar plots, error plots, line error plots, box plots, stock plots http://jpgraph.net/
Prefuse is a set of software tools for creating rich interactive data visualizations. The original prefuse toolkit provides a visualization framework for the Java programming language. The prefuse flare toolkit provides visualization and animation tools for ActionScript and the Adobe Flash Player. NOTE: Prefuse development has been opened up to the community and the source has moved from SourceForge to a new home on GitHub .

prefuse | interactive information visualization toolkit

http://prefuse.org/
http://teethgrinder.co.uk/open-flash-chart/ When the user downloads the web page, Open Flash Chart requests the chart data from the server. The server knows who the user is so it can generate a chart for that particular user showing up to the minute data. You will need to include the Open Flash Chart in your HTML, and you also need to provide the data file on the server. The data file is either a text file, or a .php, Perl, Python, Java (or another flavour of dynamic) page. For a simple chart you would just drop the data.txt file on your website and point the Open Flash Chart to this URL.

Open Flash Chart - Home