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.
Zen Flowchart - The simplest tool to create flowcharts
Highcharts - A charting library written in pure JavaScript, offering an easy way of adding interactive charts to your web site or web application
Speedy Flowchart - For developers to be able to draw flowcharts, convert them into text files and add them into there code or readme quite quickly.
Google Charts - Interactive charts for browsers and mobile devices.
Wireflow - Create beautiful flowcharts