YUI tracking and usage
Websites using YUI over time
32,757websites on 11 Nov 2026
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We track 32,757 websites using YUI, along with their country, traffic, industry and platforms. There are 2,208 websites using YUI in United States.
About YUI
YUI (Yahoo User Interface) was an open-source JavaScript library for building interactive web applications with modular DOM manipulation, event handling, and Ajax components, deprecated in 2014.
Websites using YUI by countrymarket share
6.7%
🇺🇸US3.2%
🇯🇵JP2.7%
🇷🇺RU2.6%
🇩🇪DE1.9%
🇫🇷FR1.5%
🇨🇦CA1.4%
🇬🇧GB1.3%
🇮🇹ITWebsites using YUI by industrymarket share · top 6 industries
Shopping
Non-profit & Charity
Education
Technology & Computing
Medical & Healthcare
Law & Government
0%6.3%13%19%25%
Websites using YUI
showing 25 of 32,757| Website | Country | Traffic | Industry |
|---|---|---|---|
| 🇬🇧GB | Top 500 | Mental Health | |
| 🇪🇸ES | Top 5K | Science | |
| 🇮🇹IT | Top 5K | Law & Government | |
| 🇺🇸US | Top 5K | Technology & Computing | |
| 🇪🇸ES | Top 10K | Science | |
| 🇪🇸ES | Top 10K | Education | |
| 🇮🇳IN | Top 10K | Law & Government | |
| 🇧🇷BR | Top 10K | Agriculture & Farming | |
| 🇺🇸US | Top 10K | Non-profit & Charity | |
| 🇮🇳IN | Top 10K | Logistics & Shipping | |
| 🇧🇷BR | Top 10K | Law & Government | |
| 🇧🇷BR | Top 10K | Aerospace & Defense | |
| 🇸🇬SG | Top 50K | Travel | |
| 🇺🇸US | Top 50K | Law & Government | |
| 🇪🇸ES | Top 50K | Logistics & Shipping | |
| 🇺🇸US | Top 50K | Movies & TV | |
| 🇨🇭CH | Top 50K | Education | |
| 🇺🇸US | Top 50K | Print & Publishing | |
| 🇺🇸US | Top 50K | Manufacturing & Industrial | |
| 🇺🇸US | Top 50K | Education | |
| 🇨🇿CZ | Top 50K | Banking | |
| 🇨🇭CH | Top 50K | Law & Government | |
| 🇺🇸US | Top 50K | Non-profit & Charity | |
| 🇮🇹IT | Top 50K | Law & Government | |
| 🇨🇻CV | Top 50K | Law & Government |
Showing 25 of 32,757 websitesView detailed list →
Frequently asked
What is YUI and what is its purpose?›
YUI (Yahoo! User Interface) is an open-source JavaScript and CSS library developed by Yahoo! for building rich and interactive web applications. Its primary purpose is to simplify tasks such as DOM manipulation, event handling, and AJAX requests, while also providing various utility functions and UI components for creating a seamless user experience.
Does YUI still receive updates and support?›
No, YUI is no longer actively maintained or supported. Yahoo! announced the project's end of life in August 2014. However, the library is still available, and developers can continue using it, although it's recommended to consider alternative libraries like jQuery or Vue.js for better support and newer features.
Can YUI be used alongside other JavaScript libraries like jQuery?›
Yes, YUI can be used alongside other JavaScript libraries, including jQuery. However, doing so may cause performance issues or conflicts, depending on the specific functions being used. It is generally recommended to choose a single library for a project to avoid unnecessary complications and potential conflicts.
What are some common use cases for YUI?›
YUI is often used for creating UI components such as sliders, toolbars, dialogs, and menus. It also provides utilities for handling browser events, DOM manipulation, and enhancing website performance using techniques like lazy-loading of resources. YUI has been popular for creating web applications with a high degree of interactivity and good performance across different browsers.
Which browsers does YUI support?›
YUI supports a wide range of browsers, from older versions to the modern ones. For YUI3, it supports Internet Explorer 6+, Firefox 3.6+, Safari 3+, Chrome 5+, and Opera 10.5+. However, it's worth noting that YUI is an older library and may not receive updates for newer browser features or bug fixes for the latest browsers.
