As of October 11, 2026, Pure CSS is used by 15,622 websites in the TechLeads index: 0.10% of all UI frameworks detections, the 22nd most-used of 78 UI frameworks technologies.
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Citation
TechLeads. "Pure CSS Customers and Market Share." Data as of October 11, 2026. https://techleads.fyi/technology/pure-css/market-shareHTML link
<a href="https://techleads.fyi/technology/pure-css/market-share">Pure CSS market share (TechLeads data)</a>Websites using each technology in the TechLeads index, and its share of all UI frameworks detections.
| # | Technology | Websites | Share |
|---|---|---|---|
| 1 | Bootstrap | 10,292,371 | 67.6% |
| 2 | Tailwind CSS | 1,478,839 | 9.7% |
| 3 | Animate.css | 969,297 | 6.4% |
| 4 | UIKit | 539,827 | 3.5% |
| 5 | Radix UI | 380,282 | 2.5% |
| 6 | ZURB Foundation | 327,934 | 2.2% |
| 7 | shadcn/ui |
In HTTP Archive's monthly crawl of public websites, Pure CSS was detected on 32,397 pages in September 2026, down 18.5% from a year earlier (peak: 51,178). 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 15,622 websites using Pure CSS or download the full list as a CSV for $29.
TechLeads scans public websites and detects Pure CSS from signals in the page HTML, scripts, cookies, HTTP headers and DNS records. Market share is Pure CSS's website count divided by the website counts of all UI frameworks technologies we track; a site using two UI frameworks tools counts for both. Counts were last refreshed on October 11, 2026 and update daily.
| 249,470 |
| 1.6% |
| 8 | Element UI | 218,518 | 1.4% |
| 9 | MUI | 156,543 | 1.0% |
| 10 | Material Design Lite | 92,051 | 0.60% |
| 11 | Ant Design | 62,024 | 0.41% |
| 12 | Headless UI | 60,064 | 0.39% |
| 13 | Vuetify | 50,972 | 0.33% |
| 14 | Kendo UI | 36,825 | 0.24% |
| 15 | CivicTheme | 29,682 | 0.20% |
| 16 | MDBootstrap | 27,989 | 0.18% |
| 17 | Materialize CSS | 25,455 | 0.17% |
| 18 | Chakra UI | 23,556 | 0.15% |
| 19 | SvelteKit | 21,791 | 0.14% |
| 20 | Semantic UI | 21,318 | 0.14% |
| 21 | Pure CSS | 15,622 | 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.