⚡ Legacy Technologies in the United States

Legacy technologies are platforms and tools that have been discontinued or shut down and no longer operate. Some are completely defunct, while others remain functional but unsupported.

The United States of America (USA) is a North American country with a population of over 341 million people.

According to our data, legacy technologies are detected on 24% of websites from the United States.

Statistics based on 654K+ analyzed websites. About this data

⭐ Most Popular in 2026

The following chart shows the top legacy technologies in the United States in 2026, based on market share.

The most popular is Owl Carousel with a share of 23.4%, followed by Magnific Popup with 18.6% and Google URL Shortener with 18.5%.

Owl Carousel 23.4%
Magnific Popup 18.6%
Google URL Shortener 18.5%
jQuery Mousewheel 9.8%
Moment.js 9%
jQuery Cookie 7.4%
AddThis 3.3%
ASP 3.3%
Adobe Flash 3.3%
iLightBox 3.1%
Facebook Like 2.8%
Skrollr 2.4%
Polymer 2.2%
Microsoft Invest 1.8%
Google Webmaster Tools 1.7%

🚀 Highlights

Here is a list of the top technologies that are more popular in the United States than worldwide.
Differences between global and country rankings are shown in parentheses.

4. jQuery Mousewheel ^(-1)
5. Moment.js ^(-1)
7. AddThis ^(-3)
8. ASP ^(-1)
10. iLightBox ^(-1)
13. Polymer ^(-4)
14. Microsoft Invest ^(-9)
15. Google Webmaster Tools ^(-4)
17. AngularJS ^(-1)
18. Google Optimize ^(-6)

✨ Best Legacy Technologies

Below is a more detailed list of the top 25 of the 119 legacy technologies used on sites from the United States, ranked by their market share.

Rank	Name	Market share
1	Owl Carousel Germany A deprecated open-source jQuery plugin for creating responsive, touch-enabled, and accessible carousel sliders. FreeOpen sourceLegacy	23.4%
2	Magnific Popup Kyiv, Ukraine A responsive lightbox and dialog plugin for jQuery and Zepto.js. FreeOpen sourceLegacy	18.6%
3	Google URL Shortener Mountain View, California, United States A deprecated link service from Google. Legacy	18.5%
4	jQuery Mousewheel San Francisco, California, United States A jQuery plugin that adds cross-browser mouse wheel support with delta normalization. FreeOpen sourceLegacy	9.8%
5	Moment.js San Francisco, California, United States An open-source JavaScript library for parsing, validating, manipulating, and formatting dates. FreeOpen sourceLegacy	9%
6	jQuery Cookie Germany A deprecated jQuery plugin for reading, writing and deleting cookies. FreeOpen sourceLegacy	7.4%
7	AddThis Austin, Texas, United States A social bookmarking service that discontinued its services on May 31, 2023. FreeLegacy	3.3%
8	ASP Redmond, Washington, United States A server-side scripting language and dynamic web page engine. FreeLegacy	3.3%
9	Adobe Flash San Jose, California, United States A discontinued multimedia software platform for creating animations and interactive apps. Legacy	3.3%
10	iLightBox A commercial jQuery lightbox plugin. $16+Legacy	3.1%
11	Facebook Like Menlo Park, California, United States A social plugin that allowed websites to embed a button for visitors to like and share web pages on Facebook. Legacy	2.8%
12	Skrollr Standalone parallax scrolling JavaScript library for mobile (Android, iOS) and desktop in about 12k minified. FreeOpen sourceLegacy	2.4%
13	Polymer Mountain View, California, United States A legacy open-source JavaScript library created by Google for building components based on Web Components standards. FreeOpen sourceLegacy	2.2%
14	Microsoft Invest Redmond, Washington, United States A demand-side ad management platform created after Microsoft's acquisition of Xandr to facilitate programmatic media buying. Legacy	1.8%
15	Google Webmaster Tools Mountain View, California, United States The old Google Webmaster Tools, detected by the meta name "verify-v1", which have been deprecated in favor of Google Search Console. FreeLegacy	1.7%
16	Picturefill Boston, Massachusetts, United States A responsive image polyfill for <picture>, srcset, sizes, and more. FreeOpen sourceLegacy	1.7%
17	AngularJS Mountain View, California, United States A discontinued open-source web framework from Google that has been superseded by Angular. FreeOpen sourceLegacy	1.6%
18	Google Optimize Mountain View, California, United States A free website optimization tool integrated with Google Ads that enabled A/B, multivariate, and redirect landing page testing. Legacy	1.2%
19	CentOS Raleigh, North Carolina, United States A discontinued open-source Linux distribution compatible with RHEL. Legacy	1%
20	SWFObject A deprecated framework for detecting the Adobe Flash Player plugin and embedding Flash files. FreeOpen sourceLegacy	1%
21	jQuery LazyLoad Finland A deprecated jQuery lazy loading plugin. FreeOpen sourceLegacy	0.9%
22	Microsoft FrontPage Redmond, Washington, United States A WYSIWYG HTML editor and website administration tool that was part of Microsoft Office until it was discontinued in 2003. $149Legacy	0.9%
23	Messenger Customer Chat Menlo Park, California, United States The website chat widget from Meta that was retired in May 2024. Legacy	0.7%
24	Google Funding Choices Mountain View, California, United States A messaging tool for GDPR and CCPA compliance and ad blocking recovery. Legacy	0.7%
25	Wirecard Aschheim, Bavaria, Germany An insolvent German payment processor and financial services provider whose executives have been arrested. Legacy	0.6%

👉 See Also

🌎 Legacy in other countries

🗃️ About This Data

We evaluate the popularity of technologies based on the number of websites where we detect their usage.
Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
This report is based on the analysis of 654,147 websites from the United States.
We currently track the presence of 130 legacy technologies across the web.
Of these, 119 were detected on websites from the United States.
Statistics were last calculated on September 19, 2026.
For more details, see our methodology and disclaimer.