⚡ Legacy Technologies in Bulgaria

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.

Bulgaria is a Southeastern European country with a population of around 6.5 million people.

According to our data, legacy technologies are detected on 21.8% of websites from Bulgaria.

⭐ Most Popular in 2026

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

The most popular is Magnific Popup with a share of 27.7%, followed by jQuery Cookie with 13.2% and jQuery Mousewheel with 11.5%.

Magnific Popup 27.7%
jQuery Cookie 13.2%
jQuery Mousewheel 11.5%
Google URL Shortener 11.3%
Adobe Flash 7.7%
Messenger Customer Chat 5%
Facebook Like Box 4.5%
AddThis 4.3%
CentOS 3.9%
SWFObject 3.6%
Google Webmaster Tools 3.5%
Skype 3.5%
iLightBox 2.5%
Skrollr 2.3%
jQuery LazyLoad 2.3%

🚀 Highlights

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

3. jQuery Mousewheel ^(-1)
6. Messenger Customer Chat ^(-8)
7. Facebook Like Box ^(-13)
9. CentOS ^(-1)
10. SWFObject ^(-8)
11. Google Webmaster Tools ^(-5)
12. Skype ^(-3)
16. Google Funding Choices ^(-3)
18. Closure Library ^(-7)
19. Google Sign-In ^(-16)

✨ Best Legacy Technologies

Below is a more detailed list of the top 25 of the 70 legacy technologies used on sites from Bulgaria, ranked by their market share.

Rank	Name	Market share
1	Magnific Popup A responsive lightbox and dialog plugin for jQuery and Zepto.js. FreeOpen sourceLegacy	27.7%
2	jQuery Cookie A deprecated jQuery plugin for reading, writing and deleting cookies. FreeOpen sourceLegacy	13.2%
3	jQuery Mousewheel A jQuery plugin that adds cross-browser mouse wheel support. FreeOpen sourceLegacy	11.5%
4	Google URL Shortener Mountain View, California, United States A deprecated link service from Google. Legacy	11.3%
5	Adobe Flash San Jose, California, United States A discontinued multimedia software platform for creating animations and interactive apps. Legacy	7.7%
6	Messenger Customer Chat Menlo Park, California, United States The website chat widget from Meta that was retired in May 2024. Legacy	5%
7	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	4.5%
8	AddThis Austin, Texas, United States A social bookmarking service that discontinued its services on May 31, 2023. FreeLegacy	4.3%
9	CentOS Raleigh, North Carolina, United States A discontinued open-source Linux distribution compatible with RHEL. Legacy	3.9%
10	SWFObject A deprecated framework for detecting the Adobe Flash Player plugin and embedding Flash files. FreeOpen sourceLegacy	3.6%
11	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	3.5%
12	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	3.5%
13	iLightBox A commercial jQuery lightbox plugin. $16+Legacy	2.5%
14	Skrollr Standalone parallax scrolling JavaScript library for mobile (Android, iOS) and desktop in about 12k minified. FreeOpen sourceLegacy	2.3%
15	jQuery LazyLoad A deprecated jQuery lazy loading plugin. FreeOpen sourceLegacy	2.3%
16	Google Funding Choices Mountain View, California, United States A messaging tool for GDPR and CCPA compliance and ad blocking recovery. Legacy	1.9%
17	Picturefill A responsive image polyfill for , srcset, sizes, and more. FreeOpen sourceLegacy	1.6%
18	Closure Library Mountain View, California, United States A low-level JavaScript library designed for building complex and scalable web applications. FreeOpen sourceLegacy	1.4%
19	Google Sign-In Mountain View, California, United States A deprecated JavaScript library that has been superseded by Google Identity Services for Web. FreeLegacy	1.3%
20	AngularJS Mountain View, California, United States A discontinued open-source web framework from Google that has been superseded by Angular. FreeOpen sourceLegacy	1.2%
21	Alexa Seattle, Washington, United States A web traffic analysis service from Amazon that was discontinued in 2022. Legacy	1.2%
22	Cufon A discontinued JavaScript library that performs text replacement on web pages, using the canvas element and VML to render fancy fonts. FreeOpen sourceLegacy	1.2%
23	ASP Redmond, Washington, United States A server-side scripting language and dynamic web page engine. FreeLegacy	1%
24	qTranslate-X A discontinued WordPress plugin used for managing dynamic multilingual content on websites. FreeOpen sourceLegacy	0.9%
25	Google +1 Button Mountain View, California, United States The sharing button code for the discontinued Google +1 service. Legacy	0.9%

👉 See Also

🌎 Legacy in other countries

Data is based on the analysis of 12,911 websites from Bulgaria.
Statistics were last calculated on March 21, 2026.
For details, see our methodology and disclaimer.