⚡ User Interface Frameworks in Spain

User Interface (UI) frameworks are libraries of code, design elements, and components that help web developers create user interfaces with consistent structure and behavior.

Spain is a Southern European country with a population of around 48 million people.

According to our research, user interface frameworks are used on 53% of websites from Spain.

⭐ Most Popular in 2026

The following chart shows the top UI frameworks in Spain in 2026, based on market share.

The most popular is Bootstrap with an impressive share of 60.3%, followed by jQuery UI with 48.8% and Tailwind CSS with 3.4%.

Bootstrap 60.3%
jQuery UI 48.8%
Tailwind CSS 3.4%
UIKit 2.7%
Foundation 2.1%
AMP 1.6%
Bulma 0.6%
Spectre.css 0.4%
Materialize 0.4%
Angular Material 0.2%
Material Design Lite 0.2%
Material UI 0.1%
W3.CSS 0.1%
Radix UI 0.1%
MDB 0.1%

🚀 Highlights

Here is a list of the top frameworks that are more popular in Spain than worldwide.
Differences between global and country rankings are shown in parentheses.

4. UIKit ^(-2)
8. Spectre.css ^(-3)
10. Angular Material ^(-3)
11. Material Design Lite ^(-11)
13. W3.CSS ^(-1)
15. MDB ^(-2)
18. Semantic UI ^(-2)
20. Chakra UI ^(-1)
22. Vuetify ^(-2)
23. PrimeVue ^(-15)

✨ Best UI Frameworks

Below is a more detailed list of the top 25 of the 45 UI frameworks used on sites from Spain, ranked by their market share.

Rank	Name	Market share
1	Bootstrap San Francisco, California, United States An open-source framework for building responsive, mobile-first websites and web applications with HTML, CSS, and JavaScript, originally developed at Twitter. FreeOpen source	60.3%
2	jQuery UI San Francisco, California, United States A curated set of user interface interactions, effects, widgets, and themes built on top of the jQuery JavaScript Library. FreeOpen source	48.8%
3	Tailwind CSS Kitchener, Ontario, Canada An open-source utility-first framework that provides low-level CSS classes for building user interfaces directly in markup. FreeOpen source$149+	3.4%
4	UIKit Hamburg, Germany A lightweight and modular front-end framework. FreeOpen source	2.7%
5	Foundation Campbell, California, United States An open-source responsive framework that provides a customizable grid system, a library of UI components, HTML templates, and JavaScript plugins. FreeOpen source	2.1%
6	AMP San Francisco, California, United States An open-source HTML framework for creating lightweight pages that are optimized for mobile web browsing and load faster. FreeOpen source	1.6%
7	Bulma London, United Kingdom An open-source modular CSS framework based on Flexbox. FreeOpen source	0.6%
8	Spectre.css Shanghai, China A lightweight, responsive CSS framework designed for faster and extensible development. FreeOpen source	0.4%
9	Materialize Pittsburgh, Pennsylvania, United States A responsive CSS framework based on Google's Material Design guidelines. FreeOpen source	0.4%
10	Angular Material Mountain View, California, United States A library of UI components for Angular that implements Google's Material Design specification. FreeOpen source	0.2%
11	Material Design Lite Mountain View, California, United States A legacy user interface framework that implements Material Design components using plain CSS, JavaScript, and HTML without external dependencies. FreeOpen sourceLegacy	0.2%
12	Material UI Paris, France An open-source React component library that implements Google's Material Design. FreeOpen source$180+/developer/year	0.1%
13	W3.CSS Sandnes, Norway An open-source, pure CSS framework developed by the W3Schools team, designed for building responsive websites without JavaScript. FreeOpen source	0.1%
14	Radix UI San Francisco, California, United States An open-source component library that provides low-level, unstyled interface primitives for building accessible user interfaces and design systems in web applications. FreeOpen source	0.1%
15	MDB Warsaw, Poland A UI toolkit that combines Bootstrap with Google's Material Design guidelines. FreeOpen source€29+	0.1%
16	Headless UI Kitchener, Ontario, Canada Completely unstyled, fully accessible UI components, designed to integrate beautifully with Tailwind CSS. FreeOpen source	0.1%
17	Pure CSS New York, United States A lightweight, responsive CSS framework developed by Yahoo for building fast and minimal web interfaces. FreeOpen source	0.08%
18	Semantic UI New York, United States An open-source component framework that helps create responsive layouts using human-friendly CSS class names. FreeOpen source	0.08%
19	Tachyons Boise, Idaho, United States A lightweight, functional CSS framework that enables the creation of fast, responsive, and accessible web interfaces without writing custom CSS. FreeOpen source	0.07%
20	Chakra UI Manchester, United Kingdom A comprehensive library of accessible, reusable, and composable React components. FreeOpen source	0.06%
21	Kendo UI Burlington, Massachusetts, United States A commercial bundle of four JavaScript UI libraries built natively for jQuery, Angular, React, and Vue. FreeOpen source$799+/year	0.05%
22	Vuetify Southlake, Texas, United States An open-source, no design-skills-required UI library of beautifully handcrafted Vue components. FreeOpen source	0.04%
23	PrimeVue Ankara, Turkey A set of 80+ open source, customizable UI components for Vue.js that support pre-built themes or can be unstyled. FreeOpen source$249+	0.02%
24	Ant Design Hangzhou, China An enterprise-level UI design language and React component library. FreeOpen source	0.02%
25	Flat UI New York, United States A free design framework and theme for Bootstrap. FreeOpen source	0.02%

👉 See Also

🌎 UI Frameworks in other countries

Data is based on the analysis of 84,980 websites from Spain.
Statistics were last calculated on March 21, 2026.
For details, see our methodology and disclaimer.