⚡ 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 31.7% of websites from Korea.

⭐ 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 23.5%, followed by Messenger Customer Chat with 19.4% and ASP with 12.9%.

jQuery Cookie 23.5%
Messenger Customer Chat 19.4%
ASP 12.9%
CentOS 10%
jQuery LazyLoad 8.3%
Magnific Popup 7.8%
Naver Post 7.3%
Adobe Flash 5.9%
jQuery Mousewheel 5.6%
RawGit 2.7%
Polymer 1.6%
Google Funding Choices 1.2%
Google URL Shortener 1.2%
iScroll 1.1%
Prefix-free 1.1%

🚀 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 ^(-1)
2. Messenger Customer Chat ^(-12)
3. ASP ^(-4)
4. CentOS ^(-6)
5. jQuery LazyLoad ^(-8)
7. Naver Post ^(-50)
10. RawGit ^(-17)
12. Google Funding Choices ^(-7)
14. iScroll ^(-12)
15. Prefix-free ^(-24)

✨ Best Legacy Technologies

Below is a more detailed list of the top 25 of the 58 legacy technologies used on sites from Korea, ranked by their market share.

Rank	Name	Market share
1	jQuery Cookie A deprecated jQuery plugin for reading, writing and deleting cookies. FreeOpen sourceLegacy	23.5%
2	Messenger Customer Chat Menlo Park, California, United States The website chat widget from Meta that was retired in May 2024. Legacy	19.4%
3	ASP Redmond, Washington, United States A server-side scripting language and dynamic web page engine. FreeLegacy	12.9%
4	CentOS Raleigh, North Carolina, United States A discontinued open-source Linux distribution compatible with RHEL. Legacy	10%
5	jQuery LazyLoad A deprecated jQuery lazy loading plugin. FreeOpen sourceLegacy	8.3%
6	Magnific Popup A responsive lightbox and dialog plugin for jQuery and Zepto.js. FreeOpen sourceLegacy	7.8%
7	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	7.3%
8	Adobe Flash San Jose, California, United States A discontinued multimedia software platform for creating animations and interactive apps. Legacy	5.9%
9	jQuery Mousewheel A jQuery plugin that adds cross-browser mouse wheel support. FreeOpen sourceLegacy	5.6%
10	RawGit Portland, Oregon, United States A public CDN for serving files from raw.githubusercontent.com with the correct content types. FreeLegacy	2.7%
11	Polymer A library for creating encapsulated, reusable web components. FreeOpen sourceLegacy	1.6%
12	Google Funding Choices Mountain View, California, United States A messaging tool for GDPR and CCPA compliance and ad blocking recovery. Legacy	1.2%
13	Google URL Shortener Mountain View, California, United States A deprecated link service from Google. Legacy	1.2%
14	iScroll A high-performance JavaScript library for smooth scrolling. FreeOpen sourceLegacy	1.1%
15	Prefix-free A legacy script that adds browser prefixes to CSS code when needed for old browsers. FreeOpen sourceLegacy	1.1%
16	Skrollr Standalone parallax scrolling JavaScript library for mobile (Android, iOS) and desktop in about 12k minified. FreeOpen sourceLegacy	1.1%
17	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%
18	SWFObject A deprecated framework for detecting the Adobe Flash Player plugin and embedding Flash files. FreeOpen sourceLegacy	0.9%
19	iLightBox A commercial jQuery lightbox plugin. $16+Legacy	0.7%
20	Closure Library Mountain View, California, United States A low-level JavaScript library designed for building complex and scalable web applications. FreeOpen sourceLegacy	0.7%
21	AngularJS Mountain View, California, United States A discontinued open-source web framework from Google that has been superseded by Angular. FreeOpen sourceLegacy	0.6%
22	Namo WebEditor Korea A legacy WYSIWYG HTML editor that was discontinued in 2011. Legacy	0.6%
23	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	0.5%
24	AddThis Austin, Texas, United States A social bookmarking service that discontinued its services on May 31, 2023. FreeLegacy	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

Data is based on the analysis of 25,805 websites from Korea.
Statistics were last calculated on March 20, 2026.
For details, see our methodology and disclaimer.