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...

VS

SocketIO
21,541 websites

SocketIO is free to use

http://socket.io/

Socket.IO aims to make realtime apps possible in every browser and mobile device, blurring the differences between the different transport mechanisms. It's care-free realtime 100% 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, SocketIO 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 19 other categories.

2 SocketIO is leading in Adult.

Geography

1 Highcharts is leading in most countries, including United States, China, India, United Kingdom and 152 other countries.

2 SocketIO is leading in Poland, Yemen, Somalia, Virgin Islands and U.S..