⚡ Legacy Technologies in the Czech Republic

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 Czech Republic is a Central European country with a population of around 10.5 million people.

According to our data, legacy technologies are detected on 20.2% of websites from the Czech Republic.

Statistics based on 37K+ analyzed websites. About this data

⭐ Most Popular in 2026

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

The most popular is Magnific Popup with a share of 23.5%, followed by Google URL Shortener with 13.9% and jQuery Cookie with 12.9%.

Magnific Popup 23.5%
Google URL Shortener 13.9%
jQuery Cookie 12.9%
jQuery Mousewheel 11.7%
ASP 6.5%
Adobe Flash 5.9%
CentOS 5.4%
Google Webmaster Tools 4.7%
Facebook Like Box 3.5%
AddThis 3%
SWFObject 2.4%
iLightBox 1.9%
Picturefill 1.8%
Messenger Customer Chat 1.7%
Other 1.2%

🚀 Highlights

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

2. Google URL Shortener ^(-1)
5. ASP ^(-2)
7. CentOS ^(-3)
8. Google Webmaster Tools ^(-8)
9. Facebook Like Box ^(-11)
11. SWFObject ^(-7)
19. Lightbox for Bootstrap ^(-15)
22. Turbolinks ^(-2)
23. Cufon ^(-8)
25. Shadowbox ^(-7)

✨ Best Legacy Technologies

Below is a more detailed list of the top 25 of the 77 legacy technologies used on sites from the Czech Republic, ranked by their market share.

Rank	Name	Market share
1	Magnific Popup A responsive lightbox and dialog plugin for jQuery and Zepto. FreeOpen sourceLegacy	23.5%
2	Google URL Shortener Mountain View, California, United States A deprecated link service from Google. Legacy	13.9%
3	jQuery Cookie A deprecated jQuery plugin for reading, writing and deleting cookies. FreeOpen sourceLegacy	12.9%
4	jQuery Mousewheel A jQuery plugin that adds cross-browser mouse wheel support. FreeOpen sourceLegacy	11.7%
5	ASP Redmond, Washington, United States A server-side scripting language and dynamic web page engine. FreeLegacy	6.5%
6	Adobe Flash San Jose, California, United States A discontinued multimedia software platform for creating animations and interactive apps. Legacy	5.9%
7	CentOS Raleigh, North Carolina, United States A discontinued open-source Linux distribution compatible with RHEL. Legacy	5.4%
8	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	4.7%
9	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	3.5%
10	AddThis Austin, Texas, United States A social bookmarking service that discontinued its services on May 31, 2023. FreeLegacy	3%
11	SWFObject A deprecated framework for detecting the Adobe Flash Player plugin and embedding Flash files. FreeOpen sourceLegacy	2.4%
12	iLightBox A commercial jQuery lightbox plugin. $16+Legacy	1.9%
13	Picturefill A responsive image polyfill for , srcset, sizes, and more. FreeOpen sourceLegacy	1.8%
14	Messenger Customer Chat Menlo Park, California, United States The website chat widget from Meta that was retired in May 2024. Legacy	1.7%
15	jQuery LazyLoad A deprecated jQuery lazy loading plugin. FreeOpen sourceLegacy	1.7%
16	Polymer A library for creating encapsulated, reusable web components. FreeOpen sourceLegacy	1.7%
17	Skrollr Standalone parallax scrolling JavaScript library for mobile (Android, iOS) and desktop in about 12k minified. FreeOpen sourceLegacy	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	1.3%
19	Lightbox for Bootstrap A lightbox module for Bootstrap that supports images, YouTube videos and galleries - built around Bootstrap's Modal plugin. FreeOpen sourceLegacy	1.2%
20	Google Funding Choices Mountain View, California, United States A messaging tool for GDPR and CCPA compliance and ad blocking recovery. Legacy	1.2%
21	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	1.1%
22	Turbolinks Chicago, Illinois, United States A JavaScript library that allows web apps to behave like a single page application. FreeOpen sourceLegacy	1%
23	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%
24	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%
25	Shadowbox A lightbox library for photos and videos, last released in 2014. FreeOpen sourceLegacy	0.8%

👉 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 37,156 websites from the Czech Republic.
We currently track the presence of 117 legacy technologies across the web.
Of these, 77 were detected on websites from the Czech Republic.
Statistics were last calculated on May 5, 2026.
For more details, see our methodology and disclaimer.