⚡ User Interface Frameworks in Portugal

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

Portugal is a Southern European country with a population of around 10.3 million people.

According to our research, user interface frameworks are used on 54.1% of websites from Portugal.

⭐ Most Popular in 2026

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

The most popular is Bootstrap with a substantial share of 64.7%, followed by jQuery UI with 41% and Tailwind CSS with 4.7%.

Bootstrap 64.7%
jQuery UI 41%
Tailwind CSS 4.7%
Foundation 3.6%
UIKit 3%
AMP 1.2%
Spectre.css 1%
Bulma 0.8%
Materialize 0.5%
Material UI 0.2%
Angular Material 0.2%
Radix UI 0.2%
W3.CSS 0.2%
Kendo UI 0.2%
Semantic UI 0.1%

🚀 Highlights

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

5. UIKit ^(-1)
7. Spectre.css ^(-4)
11. Angular Material ^(-2)
13. W3.CSS ^(-1)
14. Kendo UI ^(-5)
15. Semantic UI ^(-5)
17. Chakra UI ^(-4)
20. Shoelace ^(-9)
21. AngularJS Material ^(-13)
22. Vuetify ^(-2)

✨ Best UI Frameworks

Below is a more detailed list of the top 25 of the 36 UI frameworks used on sites from Portugal, 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	64.7%
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	41%
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+	4.7%
4	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	3.6%
5	UIKit Hamburg, Germany A lightweight and modular front-end framework. FreeOpen source	3%
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	1.2%
7	Spectre.css Shanghai, China A lightweight, responsive CSS framework designed for faster and extensible development. FreeOpen source	1%
8	Bulma London, United Kingdom An open-source modular CSS framework based on Flexbox. FreeOpen source	0.8%
9	Materialize Pittsburgh, Pennsylvania, United States A responsive CSS framework based on Google's Material Design guidelines. FreeOpen source	0.5%
10	Material UI Paris, France An open-source React component library that implements Google's Material Design. FreeOpen source$180+/developer/year	0.2%
11	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%
12	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	0.2%
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	0.2%
14	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	0.2%
15	Semantic UI New York, United States An open-source component framework that helps create responsive layouts using human-friendly CSS class names. FreeOpen source	0.1%
16	Headless UI Kitchener, Ontario, Canada Completely unstyled, fully accessible UI components, designed to integrate beautifully with Tailwind CSS. FreeOpen source	0.1%
17	Chakra UI Manchester, United Kingdom A comprehensive library of accessible, reusable, and composable React components. FreeOpen source	0.1%
18	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	0.09%
19	MDB Warsaw, Poland A UI toolkit that combines Bootstrap with Google's Material Design guidelines. FreeOpen source€29+	0.06%
20	Shoelace A framework-agnostic library of production-ready web user interface components built entirely with native Web Component standards, ensuring consistent design and behavior across any JavaScript framework or none at all. FreeOpen source	0.05%
21	AngularJS Material Mountain View, California, United States An implementation of Google's Material Design Specification (2014-2017) for AngularJS developers. FreeOpen sourceLegacy	0.04%
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	Flat UI New York, United States A free design framework and theme for Bootstrap. FreeOpen source	0.04%
24	Pure CSS New York, United States A lightweight, responsive CSS framework developed by Yahoo for building fast and minimal web interfaces. FreeOpen source	0.04%
25	PrimeFaces Ankara, Turkey An open-source JavaServer Faces framework with over 100 components, a touch-optimized mobile kit, client-side validation, and a theme engine. FreeOpen source$249+	0.04%

👉 See Also

🌎 UI Frameworks in other countries

Data is based on the analysis of 14,630 websites from Portugal.
Statistics were last calculated on March 21, 2026.
For details, see our methodology and disclaimer.