Google Charts - Interactive charts for browsers and mobile devices.
QuickChart - QuickChart is easy to use and open-source open API that makes it easy to generate chart images.
ZingChart - ZingChart is a fast, modern, powerful JavaScript charting library for building animated, interactive charts and graphs. Bring on the big data!
Highcharts - A charting library written in pure JavaScript, offering an easy way of adding interactive charts to your web site or web application
Image Charts - No more pain rendering charts server-side.
AnyChart - Award-winning JavaScript charting library & Qlik Sense extensions from a global leader in data visualization! Loved by thousands of happy customers, including over 75% of Fortune 500 companies & over half of the top 1000 software vendors worldwide.