Using the free online editor for AmChart, the interactive flash chart creation software package, you can simplify the development process of creating graphs on your Joomla website.
We have many examples of graphs we produced with AmChart and Ammap.
AmChart requires that you have some knowledge about inserting text in an XML file, inserting some code in a Joomla article and using FTP to transfer files to your server. You can read more about inserting AmChart graphs in your Joomla website in this tutorial.
You can visit the AmChart Site to check out this stunning online application which makes the development of AmChart graphs so much easier if you do not want to play XML files.