Ranked in these QuestionsQuestion Ranking
Pro Easy to use
Google Charts has a large selection of chart types to get started with and have up in running in very little time. It uses sensible defaults, but has flexible options to allow for customization when needed. Better than most other free to use Chart APIs and has great documentation provided by Google.
Pro Robust API
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 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
Con Cannot self-host
Google does not allow you to save or host the code yourself.
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.