====== Chart ======
  * [[http://www.jchartfx.com/|jChartFX]] - a set of Javascript libraries providing the most complete collection of charts and graphs for professional and serious business data visualization and analysis
  * [[http://www.chartjs.org/|Chart.js]] - Easy, object oriented client side graphs for designers and developers

====== jQuery + jFlot - Plots, Canvas and Charts ======
http://moblur.org/workshop/jflot_intro/

用 jQuery 和 Javascript 在使用者端描繪出流量圖。

====== pChart ======
http://pchart.sourceforge.net/

a PHP class to build charts