When comparing Eastwood Charts vs ZingChart, the Slant community recommends Eastwood Charts for most people. In the question“What are the best image chart services for embedding in email?” Eastwood Charts is ranked 1st while ZingChart is ranked 4th. The most important reason people chose Eastwood Charts is:
Eastwood charts was built to be an open source implementation of Google Charts. While it's not 100% the same as Google Charts it's still very faithful.
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Pros
Pro Close to Google charts
Eastwood charts was built to be an open source implementation of Google Charts. While it's not 100% the same as Google Charts it's still very faithful.
Pro Open source
Eastwood Charts is free and open source
Pro Tons of styling options
You can get extremely granular with the styling (which is very CSS-like). You can customize pretty much any aspect of a chart, so they can match your application or website perfectly.
Pro Robust API
The advantage of using a JavaScript charting library is that you can make interactive charts. The API here lets you make the most of this advantage.
Pro Easy to try
ZingChart hosts the full version of the library for evaluation on their CDN for you to try in just a matter of minutes.
Pro Angular wrapper
Pro Free branded version
There is a free version available, however it's branded. Licenses start at $249.
Pro jQuery wrapper
ZingChart has a well-built and excellently documented jQuery wrapper, making it easier to integrate ZingChart into your jQuery code.
Pro Handles large data sets without bogging down
Cons
Con Java servlet
Con Not open source
Con The free version inserts a watermark on all charts
Either their watermark is on all the charts or you have to pay expensive license fees.