FusionCharts

FusionCharts is a collection of interactive, data-driven flash charts that can be embedded within web pages and dynamic web applications easily. FusionCharts supports a wide range of chart types ranging from 2D and 3D Line, Bar, Column, Area, Pie charts to Scatter, Bubble, Logarithmic charts with single or multiple datasets. It is a platform independent web tool and can be used with any scripting languages like PHP, ASP, JSP, .NET, ColdFusion, Ruby on Rails etc. and any database.
http://www.fusioncharts.com/