D3 JS
68,169 websites

D3 JS is free to use

https://d3js.org/

D3.js is a JavaScript library for manipulating documents based on data. D3 helps you bring data to life using HTML, SVG, and CSS. D3’s emphasis on web standards gives you the full capabilities of modern browsers without tying yourself to a ...

VS

Ext JS
23,669 websites

Ext JS offers both free and paid options

https://www.sencha.com/products/extjs/#overview

Ext JS is a cross-browser JavaScript library for building rich internet applications.

Market Share by Top Websites

1 D3 JS is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 In terms of market share, Ext JS is clearly lagging behind, losing to D3 JS in all segments.

Websites Categories

1 D3 JS has better usage coverage in more websites categories. Including Computers Electronics & Technology, Science & Education, Finance, Sports and 20 other categories.

2 Ext JS hasn't got a lead over D3 JS in any websites category.

Geography

1 D3 JS is leading in most countries, including United States, Germany, United Kingdom, India and 152 other countries.

2 Ext JS is leading in China, Côte d'Ivoire, Barbados, Virgin Islands, U.S. and 2 other countries.