As of October 8, 2026, UIKit is used by 538,361 websites in the TechLeads index: 4.6% of all Framework detections, the 2nd most-used of 74 Framework technologies.
Quoting these numbers? Credit TechLeads with a link to this page.
Citation
TechLeads. "UIKit Customers and Market Share." Data as of October 8, 2026. https://techleads.fyi/technology/uikit/market-shareHTML link
<a href="https://techleads.fyi/technology/uikit/market-share">UIKit market share (TechLeads data)</a>Websites using each technology in the TechLeads index, and its share of all Framework detections.
| # | Technology | Websites | Share |
|---|---|---|---|
| 1 | core-js | 9,046,687 | 78.0% |
| 2 | UIKit | 538,361 | 4.6% |
| 3 | Babel | 359,470 | 3.1% |
| 4 | Handlebars | 250,908 | 2.2% |
| 5 | Mustache | 246,986 | 2.1% |
| 6 | Shockwave Flash Embed | 176,248 | 1.5% |
| 7 | GlobalSign Domain Verification | 163,716 |
In HTTP Archive's monthly crawl of public websites, UIKit was detected on 438,014 pages in September 2026, down 15.9% from a year earlier (peak: 542,098). Among the 1,000 most-visited sites, it appeared on 6. HTTP Archive is a separate dataset from the TechLeads index, so its numbers are not added to ours.
Same month, other UI Frameworks technologies in HTTP Archive: Bootstrap 12,662,985, Tailwind CSS 3,462,723, Animate.css 1,731,531, Radix UI 990,535, ZURB Foundation 748,793.
Based on country-code domains (such as .de or .co.uk); websites on .com and other generic domains are not assigned a country.
See all 538,361 websites using UIKit or download the full list as a CSV for $29.
TechLeads scans public websites and detects UIKit from signals in the page HTML, scripts, cookies, HTTP headers and DNS records. Market share is UIKit's website count divided by the website counts of all Framework technologies we track; a site using two Framework tools counts for both. Counts were last refreshed on October 8, 2026 and update daily.
| 1.4% |
| 8 | Facebook Domain Verification | 143,449 | 1.2% |
| 9 | Gatsby JS | 111,580 | 0.96% |
| 10 | Material Design Lite | 92,019 | 0.79% |
| 11 | ASP.NET MVC | 76,903 | 0.66% |
| 12 | OneTrust Domain Verification | 63,153 | 0.54% |
| 13 | Adobe Dreamweaver | 61,377 | 0.53% |
| 14 | skelJS | 36,198 | 0.31% |
| 15 | Less | 34,331 | 0.30% |
| 16 | Telerik Controls | 30,523 | 0.26% |
| 17 | MUI CSS | 26,235 | 0.23% |
| 18 | Material Design for Bootstrap | 13,803 | 0.12% |
| 19 | Engintron | 12,912 | 0.11% |
| 20 | BootstrapMade | 11,675 | 0.10% |
| 21 | Start Bootstrap | 11,168 | 0.10% |
Rows link to each competitor's market share page where one exists. The table lists the 21 most-used technologies; ranks are by website count.