Toast UI Chart
Toast UI Chart is a third party Javascript library (https://github.com/nhn/tui.chart) that allows designers and developers to draw all kinds of charts. For example, line charts, area charts, bar charts, pie charts etc. It’s a self-contained script so it does not depend on external services. The data for the charts can be loaded from different data sources (MYSQL, CSV, JSON, MDB).
Features
• Area, Bar, Column, Line, Pie/Donut, Line Area, Column Line and Radar.
• Multiple datasets can be stacked for Area, Bar and Column charts.
• Data from charts can be exported to image (.jpeg, .png) files and csv or xls files.
• Load data from MySQL, CSV, MS Access (MDB) or JSON
• Show tooltips
• Legend with checkboxes, which allows the user to show/hide datasets.
• Animation support

More information:
https://www.wysiwygwebbuilder.com/toastuichart.html
jqPlot
jqPlot is a plotting and charting plugin for the jQuery Javascript framework. jqPlot produces beautiful line, bar and pie charts with many features (http://www.jqplot.com/) . This extension helps you to add jqPlot charts to your website within writing any code!
The data for the charts can be loaded from different data sources (MYSQL, CSV, JSON, MDB).
Features
• Area, Bar, Column, Line, Stacked, Pie and Donut charts..
• Options for zoom, animation, shadow, point labels.
• Support multiple line plots in one chart, with different styles, markers, line width etc.
• Load data from MySQL, CSV, MS Access (MDB) or JSON

More information:
https://www.wysiwygwebbuilder.com/jqplot.html
The demo versions can be downloaded via the Extension Manager (Menu->Tools->Extension Manager->Online Gallery->Miscellaneous).
The demos are fully functionality, however the properties will not be saved.
Purchase Toast UI Chart extension for $5.95
https://secure.2checkout.com/order/checkout.php?PRODS=40807675
Purchase jqPlot extension for $5.95
https://secure.2checkout.com/order/checkout.php?PRODS=40807638