Google Charts API (previously described here) is so easy to use. Just adding parameters to the API URL & that’s it.

If you ever wondered how easier it could be, than ChartMaker, which is an interface that creates the Google Charts API URL with the parameters that you mention, is the answer.

ChartMaker is built with the Ext JS Javascript library and is an open source code which is created by Dion Almaer (also the founder of Ajaxian).

To read the hard & complicated (a funny story) creation process of ChartMaker, click here.

Open Flash Chart is a free flash chart library which flash charts can be generated via data from php, perl, python, java, asp, asp.net (any dynamic languge) or a text file.

Using Open Flash Chart is as simple as pointing the data to this free flash chart object. To make it simpler, there are ready to use PHP, Perl, Python, Java classes.

Charts supported by Open Flash Chart:

• Data Lines Chart
• Bar Chart
• 3D Bar Chart
• Glass Bar Chart
• Fade Bar Chart
• Sketch Bars Chart
• Area Chart
• Bars + Lines Chart
• Pie Chart
• Scatter Chart
• Candle Chart

Tip: Php Developers, there is a specific php version of XML/SWF Charts here.

XML/SWF Charts is a very nice tool for creating attractive charts. Creating bar charts, pie charts, line charts & more is posible with XML/SWF Charts.

Using XML/SWF Charts is free (some limitations).

How To Use?

Create an XML source to describe a chart, then pass it to this tool’s flash file to generate the chart. The XML source can be prepared manually, or generated dynamically using any scripting language (PHP, ASP, CFML, Perl, etc.)

Features:

- Web charts and graphs from dynamic data
- Live and interactive chart updates without reloading the web page
- Clickable charts, and drill-down
- Animated transitions
- Printable charts
- Simple and flexible chart generation
- Quality Flash graphics
- Supports unicode text to display special characters and any language

Chart types:

- Line charts
- Column charts
- Stacked column charts
- Floating column charts
- 3D column charts
- Stacked 3D column charts
- Parallel 3D column charts
- Pie charts
- 3D Pie charts
- Bar charts
- Stacked bar charts
- Floating bar charts
- Area charts charts
- Stacked area charts
- Candlestick charts
- Scatter charts
- Polar charts
- Mixed charts
- Composite charts
- Joined charts