Highcharts
64,509 websites

Highcharts offers both free and paid options

http://www.highcharts.com/products/highcharts

Highcharts is a charting library written in pure JavaScript, offering an easy way of adding interactive charts to your web site or web application. Highcharts currently supports line, spline, area, areaspline, column, bar, pie, scatter, ang...

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HubSpot Vex
6,055 websites

HubSpot Vex is free to use

http://github.hubspot.com/vex/

Beautiful, functional, dialogs in Javascript

Market Share by Top Websites

1 Highcharts is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 In terms of market share, HubSpot Vex is clearly lagging behind, losing to Highcharts in all segments.

Websites Categories

1 Highcharts has better usage coverage in more websites categories. Including Finance, Law & Government, Computers Electronics & Technology, Science & Education and 20 other categories.

2 HubSpot Vex hasn't got a lead over Highcharts in any websites category.

Geography

1 Highcharts is leading in most countries, including United States, China, India, United Kingdom and 156 other countries.

2 HubSpot Vex hasn't got a lead over Highcharts in any country.