⚡ Legacy Technologies in Korea

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.

Korea is an East Asian country with a population of around 52 million people.

According to our data, legacy technologies are detected on 36.4% of websites from Korea.

Statistics based on 30K+ analyzed websites. About this data

⭐ Most Popular in 2026

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

The most popular is jQuery Cookie with a share of 22.2%, followed by Messenger Customer Chat with 18.9% and Owl Carousel with 17.1%.

jQuery Cookie 22.2%
Messenger Customer Chat 18.9%
Owl Carousel 17.1%
Moment.js 12.1%
ASP 11.3%
jQuery LazyLoad 8.9%
CentOS 7.7%
Magnific Popup 6.7%
Adobe Flash 6.1%
Naver Post 5.9%
jQuery Mousewheel 4.7%
RawGit 2.1%
Google Funding Choices 1%
Google URL Shortener 1%
Skrollr 1%

🚀 Highlights

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

1. jQuery Cookie ^(-3)
2. Messenger Customer Chat ^(-13)
4. Moment.js ^(-2)
5. ASP ^(-4)
6. jQuery LazyLoad ^(-8)
7. CentOS ^(-9)
10. Naver Post ^(-53)
12. RawGit ^(-20)
13. Google Funding Choices ^(-8)
16. iScroll ^(-14)

✨ Best Legacy Technologies

Below is a more detailed list of the top 25 of the 63 legacy technologies used on sites from Korea, ranked by their market share.

Rank	Name	Market share
1	jQuery Cookie Germany A deprecated jQuery plugin for reading, writing and deleting cookies. FreeOpen sourceLegacy	22.2%
2	Messenger Customer Chat Menlo Park, California, United States The website chat widget from Meta that was retired in May 2024. Legacy	18.9%
3	Owl Carousel Germany A deprecated open-source jQuery plugin for creating responsive, touch-enabled, and accessible carousel sliders. FreeOpen sourceLegacy	17.1%
4	Moment.js San Francisco, California, United States An open-source JavaScript library for parsing, validating, manipulating, and formatting dates. FreeOpen sourceLegacy	12.1%
5	ASP Redmond, Washington, United States A server-side scripting language and dynamic web page engine. FreeLegacy	11.3%
6	jQuery LazyLoad Finland A deprecated jQuery lazy loading plugin. FreeOpen sourceLegacy	8.9%
7	CentOS Raleigh, North Carolina, United States A discontinued open-source Linux distribution compatible with RHEL. Legacy	7.7%
8	Magnific Popup Kyiv, Ukraine A responsive lightbox and dialog plugin for jQuery and Zepto.js. FreeOpen sourceLegacy	6.7%
9	Adobe Flash San Jose, California, United States A discontinued multimedia software platform for creating animations and interactive apps. Legacy	6.1%
10	Naver Post Seongnam, Korea A South Korean mobile-optimized user-generated content platform that let creators publish and share expert posts on various topics before it was discontinued in April 2025, after 12 years of service. FreeLegacy	5.9%
11	jQuery Mousewheel San Francisco, California, United States A jQuery plugin that adds cross-browser mouse wheel support with delta normalization. FreeOpen sourceLegacy	4.7%
12	RawGit Portland, Oregon, United States A public CDN for serving files from raw.githubusercontent.com with the correct content types. FreeLegacy	2.1%
13	Google Funding Choices Mountain View, California, United States A messaging tool for GDPR and CCPA compliance and ad blocking recovery. Legacy	1%
14	Google URL Shortener Mountain View, California, United States A deprecated link service from Google. Legacy	1%
15	Skrollr Standalone parallax scrolling JavaScript library for mobile (Android, iOS) and desktop in about 12k minified. FreeOpen sourceLegacy	1%
16	iScroll A high-performance JavaScript library for smooth scrolling. FreeOpen sourceLegacy	1%
17	Prefix-free A legacy script that adds browser prefixes to CSS code when needed for old browsers. FreeOpen sourceLegacy	0.9%
18	SWFObject A deprecated framework for detecting the Adobe Flash Player plugin and embedding Flash files. FreeOpen sourceLegacy	0.9%
19	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	0.8%
20	iLightBox A commercial jQuery lightbox plugin. $16+Legacy	0.6%
21	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	0.6%
22	Closure Library Mountain View, California, United States A low-level JavaScript library designed for building complex and scalable web applications. FreeOpen sourceLegacy	0.5%
23	AngularJS Mountain View, California, United States A discontinued open-source web framework from Google that has been superseded by Angular. FreeOpen sourceLegacy	0.5%
24	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	0.5%
25	Google Sign-In Mountain View, California, United States A deprecated JavaScript library that has been superseded by Google Identity services for Web. FreeLegacy	0.4%

👉 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 30,207 websites from Korea.
We currently track the presence of 130 legacy technologies across the web.
Of these, 63 were detected on websites from Korea.
Statistics were last calculated on September 18, 2026.
For more details, see our methodology and disclaimer.