CSS Framework Tools

1. Tailwind CSS runs on more than half of the sites using a css framework tool (86%), 5.7 times as many sites as Bootstrap.
2. Only 2 of the 32 css framework tools we track run on more than 1% of these sites.
3. Among sites launched in September, Basscss rose to #15 from #21 in August.
4. Pintuer is a regional leader, used almost entirely by sites in China.

#	Movement	Tool	Country	Share	Bar	Sites	90 days
1	–	Tailwind CSS Utility-first CSS framework.		86%		1,474,483
2	–	Bootstrap Open-source CSS and JavaScript component library originally built at Twitter for responsive UI layouts.		15%		257,344
3	–	UIkit Lightweight, modular front-end framework for developing web interfaces.		0.4%		6,912
4	–	Layui Open-source frontend UI component framework.		<0.1%		1,128
5	▲2	Foundation Responsive front-end CSS framework by Zurb.		<0.1%		256
6	▼1	PicoCSS Pico CSS minimal classless framework,.		<0.1%		251
7	▼1	Materialize Front-end CSS framework based on Google's Material Design.		<0.1%		249
8	–	Automatic.css Utility CSS framework for WordPress page builders.		<0.1%		95
9	▼2	W3.CSS Lightweight CSS framework from W3Schools, styled after Google's Material Design.		<0.1%		70
10	–	Amaze UI Mobile first HTML, CSS and JavaScript component framework.		<0.1%		67

Share is of the 1,706,697 sites using a css framework tool; a site can use more than one. Arrows compare each tool's rank among sites launched in September with August. The line is its share of new sites over 90 days. Showing the top 10 of 32.

Watches, exports and the API give you every css framework tool and the sites using each, from £15 a month.

Other kinds of tool most often found on the same sites, leaving out the plumbing every site has (DNS, CDN, hosting).

• Framework 44,548
• Analytics 41,149
• Meta Framework 40,126
• UI Library 34,009
• Javascript Library 21,296
• Developer Tools 20,996