Polyfill.io
757,000 websites

Polyfill.io is free to use

https://polyfill.io/v3/

Polyfill is a service which accepts a request for a set of browser features and returns only the polyfills that are needed by the requesting browser.

VS

React JS
1,345,615 websites

React JS is free to use

https://facebook.github.io/react/

React is a JavaScript library by Facebook for building user interfaces. React abstracts away the DOM from you, giving a simpler programming model and better performance. React can also render on the server using Node, and it can power nativ...

Market Share by Top Websites

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

2 In terms of market share, Polyfill.io is clearly lagging behind, losing to React JS in all segments.

Websites Categories

1 React JS has better usage coverage in more websites categories. Including Computers Electronics & Technology, Science & Education, Games, Community & Society and 19 other categories.

2 Polyfill.io is leading in Law & Government.

Geography

1 React JS is leading in most countries, including United States, United Kingdom, Canada, France and 152 other countries.

2 Polyfill.io is leading in Japan, Brazil, Argentina, Czech Republic and 5 other countries.