⚡ Legacy Technologies in the United Kingdom

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 Kingdom of Great Britain and Northern Ireland (UK) is a Western European country with a population of over 67 million people.

According to our data, legacy technologies are detected on 23.5% of websites from the United Kingdom.

Statistics based on 170K+ analyzed websites. About this data

⭐ Most Popular in 2026

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

The most popular is Owl Carousel with a share of 27.6%, followed by Magnific Popup with 19.9% and jQuery Cookie with 10.3%.

Owl Carousel 27.6%
Magnific Popup 19.9%
jQuery Cookie 10.3%
jQuery Mousewheel 10.1%
Moment.js 7.1%
Google URL Shortener 6.8%
AddThis 5.1%
ASP 5.1%
Polymer 3.3%
Adobe Flash 3.3%
Facebook Like 3.1%
iLightBox 2.9%
Picturefill 2.7%
Skrollr 2.4%
Google Webmaster Tools 1.8%

🚀 Highlights

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

3. jQuery Cookie ^(-1)
4. jQuery Mousewheel ^(-1)
5. Moment.js ^(-1)
7. AddThis ^(-2)
8. ASP ^(-2)
9. Polymer ^(-3)
13. Picturefill ^(-2)
15. Google Webmaster Tools ^(-5)
16. Google Optimize ^(-8)
18. AngularJS ^(-1)

✨ Best Legacy Technologies

Below is a more detailed list of the top 25 of the 102 legacy technologies used on sites from the United Kingdom, 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	27.6%
2	Magnific Popup A responsive lightbox and dialog plugin for jQuery and Zepto.js. FreeOpen sourceLegacy	19.9%
3	jQuery Cookie A deprecated jQuery plugin for reading, writing and deleting cookies. FreeOpen sourceLegacy	10.3%
4	jQuery Mousewheel A jQuery plugin that adds cross-browser mouse wheel support. FreeOpen sourceLegacy	10.1%
5	Moment.js San Francisco, California, United States An open-source JavaScript library for parsing, validating, manipulating, and formatting dates. FreeOpen sourceLegacy	7.1%
6	Google URL Shortener Mountain View, California, United States A deprecated link service from Google. Legacy	6.8%
7	AddThis Austin, Texas, United States A social bookmarking service that discontinued its services on May 31, 2023. FreeLegacy	5.1%
8	ASP Redmond, Washington, United States A server-side scripting language and dynamic web page engine. FreeLegacy	5.1%
9	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	3.3%
10	Adobe Flash San Jose, California, United States A discontinued multimedia software platform for creating animations and interactive apps. Legacy	3.3%
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	3.1%
12	iLightBox A commercial jQuery lightbox plugin. $16+Legacy	2.9%
13	Picturefill A responsive image polyfill for <picture>, srcset, sizes, and more. FreeOpen sourceLegacy	2.7%
14	Skrollr Standalone parallax scrolling JavaScript library for mobile (Android, iOS) and desktop in about 12k minified. FreeOpen sourceLegacy	2.4%
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	1.8%
16	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	1.4%
17	CentOS Raleigh, North Carolina, United States A discontinued open-source Linux distribution compatible with RHEL. Legacy	1.2%
18	AngularJS Mountain View, California, United States A discontinued open-source web framework from Google that has been superseded by Angular. FreeOpen sourceLegacy	1.2%
19	SWFObject A deprecated framework for detecting the Adobe Flash Player plugin and embedding Flash files. FreeOpen sourceLegacy	1.2%
20	jQuery LazyLoad A deprecated jQuery lazy loading plugin. FreeOpen sourceLegacy	1.1%
21	Messenger Customer Chat Menlo Park, California, United States The website chat widget from Meta that was retired in May 2024. Legacy	1%
22	Google Funding Choices Mountain View, California, United States A messaging tool for GDPR and CCPA compliance and ad blocking recovery. Legacy	0.9%
23	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	0.8%
24	Oribi Mountain View, California, United States An all-in-one marketing analytics solution acquired by LinkedIn. Legacy	0.8%
25	Oracle Moat Austin, Texas, United States A measurement and marketing analytics suite designed to measure media performance across digital and TV advertising campaigns. Legacy	0.7%

👉 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 170,175 websites from the United Kingdom.
We currently track the presence of 124 legacy technologies across the web.
Of these, 102 were detected on websites from the United Kingdom.
Statistics were last calculated on August 4, 2026.
For more details, see our methodology and disclaimer.