CSS frameworks worldwide: market share ranking

Utility and component CSS libraries.

#	Technology	Global	United Kingdom	Netherlands	Italy	Spain	Japan	Latin America
1	Bootstrap	25%	33%	28%	41%	44%	10%	37%
2	Tailwind CSS	11%	11%	13%	7.4%	6.4%	3.3%	8.3%
3	MUI	0.7%	0.4%	0.5%	0.5%	0.4%	0.2%	0.6%
4	Foundation	0.5%	1%	1%	0.7%	0.5%	0.3%	0.4%
5	UIkit	0.3%	0.3%	0.4%	0.8%	0.8%	0.3%	0.8%
6	Chakra UI	0.2%	0.1%	0.3%	<0.1%	<0.1%	<0.1%	0.2%
7	Bulma	<0.1%	<0.1%	<0.1%	<0.1%	<0.1%	<0.1%	<0.1%

By site popularity

Share of measured sites in each Tranco popularity band that use the technology: the top 1,000, 10,000 and 100,000 sites and the whole top million.

#	Technology	Top 1K	Top 10K	Top 100K
1	Bootstrap	14%	19%	25%
2	Tailwind CSS	13%	11%	11%
3	MUI	0.5%	0.7%	0.7%
4	Foundation	0%	0.3%	0.5%
5	Chakra UI	0.2%	0.2%	0.2%
6	UIkit	0%	0.1%	0.3%
7	Bulma	0%	0.1%	<0.1%
	Sites measured	591	6,700	68,769

Our crawler: 68,769 sites · Global · updated Oct 23, 2026 · Methodology