Home / Market share / CSS frameworks & UI kits

CSS framework market share, 2026

Bootstrap leads the CSS frameworks we track: it's on 68% of the 7,214,619 websites that run any of them. Animate.css is second with 21%.

7,214,619websites run one or more

Bootstrapthe most used

40tools tracked

#	Tool	Websites	Share
1	Bootstrap	4,872,950	68%	Alternatives
2	Animate.css	1,496,375	21%	Alternatives
3	Normalize.css	499,836	7%	Alternatives
4	Tailwind CSS	297,199	4%	Alternatives
5	UIkit	275,054	4%	Alternatives
6	Radix UI	119,163	2%	Alternatives
7	Emotion	116,919	2%	Alternatives
8	styled-components	100,877	1%	Alternatives
9	Foundation	85,522	1%	Alternatives
10	Hover.css	82,436	1%	Alternatives
11	Material UI	55,891	0.8%	Alternatives
12	Headless UI	33,734	0.5%	Alternatives
13	Materialize	20,540	0.3%	Alternatives
14	Ant Design	17,785	0.2%	Alternatives
15	Chakra UI	17,520	0.2%	Alternatives
16	Pure.css	14,396	0.2%	Alternatives
17	Semantic UI	11,475	0.2%	Alternatives
18	Bulma	10,982	0.2%	Alternatives
19	Element UI	10,501	0.1%	Alternatives
20	Flowbite	9,731	0.1%	Alternatives
21	Vuetify	9,111	0.1%	Alternatives
22	PrimeVue	7,788	0.1%	Alternatives
23	Bootswatch	6,693	0.1%	Alternatives
24	Mantine	6,494	0.1%	Alternatives
25	daisyUI	4,430	0.1%	Alternatives
26	PrimeNG	3,723	0.1%	Alternatives
27	Spectre.css	3,453	0.0%	Alternatives
28	Material Components for the Web	2,943	0.0%	Alternatives
29	Quasar	2,007	0.0%	Alternatives
30	Pico CSS	1,642	0.0%	Alternatives
31	Tachyons	1,190	0.0%	Alternatives
32	Stitches	1,148	0.0%	Alternatives
33	Shoelace	1,092	0.0%	Alternatives
34	Carbon Design System	885	0.0%	Alternatives
35	Milligram	332	0.0%	Alternatives
36	Fluent UI	315	0.0%	Alternatives
37	JSS	267	0.0%	Alternatives
38	PrimeReact	248	0.0%	Alternatives
39	Water.css	191	0.0%	Alternatives
40	Primer CSS	58	0.0%	Alternatives

Share: of the websites running any of these tools. From the homepage code of the 34,199,899 sites in StackGrep's latest crawl.

The leader in each country

Domain	Most used	Websites
.comon .com	Bootstrap	1,985,198	56% of installs
.dein Germany	Bootstrap	240,452	54% of installs
.orgon .org	Bootstrap	203,743	61% of installs
.ruon .ru	Bootstrap	191,132	70% of installs
.ukin the UK	Bootstrap	120,921	62% of installs
.neton .net	Bootstrap	126,812	61% of installs
.frin France	Bootstrap	112,432	63% of installs
.jpin Japan	Bootstrap	52,633	52% of installs
.nlin the Netherlands	Bootstrap	86,444	65% of installs
.itin Italy	Bootstrap	116,892	65% of installs
.plin Poland	Bootstrap	102,772	67% of installs
.brin Brazil	Bootstrap	91,452	68% of installs

Other markets

Ecommerce platform market share CMS and website builder market share Email and SMS marketing market share Product review app market share Live chat and help desk market share Subscription and loyalty app market share Online payment provider market share Buy now, pay later market share Page builder market share Web analytics market share Cookie consent platform market share Site search and product recommendation market share Ad network and pixel market share Marketing automation and CRM market share Tag manager market share A/B testing and personalization market share CDN and hosting market share Video player and hosting market share Web map market share CAPTCHA and bot protection market share Form and survey tool market share Booking and scheduling software market share Web push notification market share Affiliate network market share Accessibility overlay market share Error tracking and RUM market share

Questions

What is the most used of the CSS frameworks?

Bootstrap, on 4,872,950 websites in our index (68% of the sites that run any of the 40 we track).

How is market share measured here?

By websites: we read the homepage code of every site in our crawl and count the sites that load each tool. A site that runs two counts for both, so the shares can add up to more than 100%. It's a count of sites, not of revenue or orders.

Want the whole list?

Sign up to download every site using any of these CSS frameworks as a spreadsheet and hear when new ones appear. 200 free credits to start. No card needed.

Start free