Google Chart API

Google has made developer's life easier by releasing Google Chart API which can be used to create chart online. Just arrange your data, and point your browser to Goggle's site with the correct query string and voila... you will have your chart presented If you want to embed it into your webpages, then you will have to use img tag to include it as an image and that's it. Nothing is simpler as that.

Of course the style here is not OOP like in JpGraph and also the parameter can be confusing, as you have to combine all of them in one single query string, but if you're used to it, you will be fine in just a few days.