JavaScript libraries

Who left Polyfill, and who still runs it

642 websites in the top 1M run Polyfill, observed directly from the rendered page in the July 2026 crawl.

Some companies running Polyfill

Every row in a full list carries the prospect's whole detected stack.

northwestern global learning office northwestern.edu11-50 · education management · 75 technologies

row52 row52.com11-50 · automotive · 17 technologies

tölvutek tolvutek.is11-50 · consumer electronics · 15 technologies

телеканал еда tveda.ru11-50 · broadcast media · 18 technologies

barefoot contessa barefootcontessa.com11-50 · food & beverages · 17 technologies

berryland campers berrylandcampers.com11-50 · retail · 31 technologies

caledonian cinemas limited caledoniancinemas.co.uk11-50 · information technology and services · 11 technologies

bllink bllink.co11-50 · financial services · 16 technologies

Not currently available as a list.

Google Analytics 92%jQuery 90%core-js 87%Google Tag Manager 85%PHP 82%HTTP/3 77%Apache HTTP Server 75%Ubuntu 72%Babel 72%Moment.js 72%

Share of a 642-domain sample of Polyfill users that also run each.

1-1028

51-20018

1001-500014

11-5013

201-5007

501-10004