⚡ Legacy Technologies in Vietnam

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.

Vietnam is a Southeast Asian country with a population of over 99 million people.

According to our data, legacy technologies are detected on 39.9% of websites from Vietnam.

Statistics based on 27K+ analyzed websites. About this data

⭐ Most Popular in 2026

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

The most popular is Owl Carousel with an impressive share of 42.7%, followed by Messenger Customer Chat with 20.7% and Google URL Shortener with 15.8%.

Owl Carousel 42.7%
Messenger Customer Chat 20.7%
Google URL Shortener 15.8%
Magnific Popup 11.8%
jQuery Cookie 7.9%
Facebook Like 5.1%
AddThis 5.1%
jQuery Mousewheel 5%
Moment.js 4.6%
Skype 3.8%
jQuery LazyLoad 3.2%
Adobe Flash 2.5%
CentOS 1.8%
ASP 1.8%
iLightBox 1.6%

🚀 Highlights

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

2. Messenger Customer Chat ^(-15)
6. Facebook Like ^(-2)
7. AddThis ^(-2)
10. Skype ^(-8)
11. jQuery LazyLoad ^(-5)
16. Facebook Like Box ^(-7)
17. Alexa ^(-8)
18. AngularJS ^(-1)
19. RawGit ^(-11)
20. SWFObject ^(-1)

✨ Best Legacy Technologies

Below is a more detailed list of the top 25 of the 67 legacy technologies used on sites from Vietnam, 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	42.7%
2	Messenger Customer Chat Menlo Park, California, United States The website chat widget from Meta that was retired in May 2024. Legacy	20.7%
3	Google URL Shortener Mountain View, California, United States A deprecated link service from Google. Legacy	15.8%
4	Magnific Popup A responsive lightbox and dialog plugin for jQuery and Zepto.js. FreeOpen sourceLegacy	11.8%
5	jQuery Cookie A deprecated jQuery plugin for reading, writing and deleting cookies. FreeOpen sourceLegacy	7.9%
6	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	5.1%
7	AddThis Austin, Texas, United States A social bookmarking service that discontinued its services on May 31, 2023. FreeLegacy	5.1%
8	jQuery Mousewheel A jQuery plugin that adds cross-browser mouse wheel support. FreeOpen sourceLegacy	5%
9	Moment.js San Francisco, California, United States An open-source JavaScript library for parsing, validating, manipulating, and formatting dates. FreeOpen sourceLegacy	4.6%
10	Skype Redmond, Washington, United States A communications platform for voice and video calls and sending instant messages that was retired on May 5, 2025 in favor of Microsoft Teams. FreeLegacy	3.8%
11	jQuery LazyLoad A deprecated jQuery lazy loading plugin. FreeOpen sourceLegacy	3.2%
12	Adobe Flash San Jose, California, United States A discontinued multimedia software platform for creating animations and interactive apps. Legacy	2.5%
13	CentOS Raleigh, North Carolina, United States A discontinued open-source Linux distribution compatible with RHEL. Legacy	1.8%
14	ASP Redmond, Washington, United States A server-side scripting language and dynamic web page engine. FreeLegacy	1.8%
15	iLightBox A commercial jQuery lightbox plugin. $16+Legacy	1.6%
16	Facebook Like Box Menlo Park, California, United States A plugin that allowed admins to promote their Facebook Pages and embed a simple feed of content from a Page into other sites. Legacy	1.5%
17	Alexa Seattle, Washington, United States A web traffic analysis service from Amazon that was discontinued in 2022. Legacy	1.3%
18	AngularJS Mountain View, California, United States A discontinued open-source web framework from Google that has been superseded by Angular. FreeOpen sourceLegacy	1.1%
19	RawGit Portland, Oregon, United States A public CDN for serving files from raw.githubusercontent.com with the correct content types. FreeLegacy	1%
20	SWFObject A deprecated framework for detecting the Adobe Flash Player plugin and embedding Flash files. FreeOpen sourceLegacy	0.8%
21	Picturefill A responsive image polyfill for <picture>, srcset, sizes, and more. FreeOpen sourceLegacy	0.8%
22	Google Sign-In Mountain View, California, United States A deprecated JavaScript library that has been superseded by Google Identity services for Web. FreeLegacy	0.7%
23	Skrollr Standalone parallax scrolling JavaScript library for mobile (Android, iOS) and desktop in about 12k minified. FreeOpen sourceLegacy	0.6%
24	qTranslate-X A discontinued WordPress plugin used for managing dynamic multilingual content on websites. FreeOpen sourceLegacy	0.6%
25	Google +1 Button Mountain View, California, United States The sharing button code for the discontinued Google +1 service. Legacy	0.5%

👉 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 27,086 websites from Vietnam.
We currently track the presence of 124 legacy technologies across the web.
Of these, 67 were detected on websites from Vietnam.
Statistics were last calculated on August 4, 2026.
For more details, see our methodology and disclaimer.