Category - JavaScript Libraries

YUI is a free, open source JavaScript and CSS framework for building richly interactive web applications.

We have discovered 65,539 live websites that are using YUI.

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Technology usage statistics

Websites using YUI 65,539 websites
Most popular in the country United States of America
Market position in JavaScript Libraries #136
Market penetration in JavaScript Libraries 0.14%
Most popular version 2.9.0

Technology adoption

Recent changes in YUI usage. (See YUI Usage Changes report)
Websites that added YUI +2,494
Websites that dropped YUI -4,707
Websites that changed version of YUI 197

Distribution by websites popularity

YUI detection in the top websites by popularity
Top 10k sites 34 websites
Top 100k sites 441 websites
Top 1m sites 3,273 websites

Websites utilizing YUI

Top websites that use YUI

Domain Country Rank Contacts
flickr.com United States of America 156
www.flickr.com United States of America 156
www.researchgate.net United States of America 692
ross.typepad.com United States of America 985
store.cpanel.net United States of America 1,024
notfound.typepad.com United States of America 1,256
See full domain list
Flat price per the report, subscription is not required.

Geographical Distribution

Technology usage distribution by websites across the globe.

Alternative Names

  • YUI Library
  • Yahoo! User Interface Library


  • 0 (4 subversions, 300 domains)
  • 1 (2 subversions, 63 domains)
  • 2 (16 subversions, 4,111 domains)
  • 3 (27 subversions, 2,115 domains)