Adesign system is a way to have modular and reusable CSS components as well as a separation of concerns of designing and using this system, by, for examplr, using design tokens.

Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.

• UpdatedNov 3, 2025
• Python

Material UI: Comprehensive React component library that implements Google's Material Design. Free forever.

• UpdatedFeb 20, 2026
• JavaScript

Chakra UI is a component system for building SaaS products with speed ⚡️

• UpdatedFeb 20, 2026
• TypeScript

🌼 🌼 🌼 🌼 🌼  The most popular, free and open-source Tailwind CSS component library

• UpdatedFeb 20, 2026
• Svelte

✍ It has never been so easy to document your things!

• UpdatedNov 21, 2025
• TypeScript

🌟 Curated design resources from all over the world.

• UpdatedJul 4, 2024

Primer is GitHub's design system. This is the CSS implementation

• UpdatedFeb 19, 2026
• SCSS

Free Tailwind CSS v4 components for your next project, designed to enhance your web development with the latest features and styles 🚀

• UpdatedFeb 20, 2026
• HTML

A design system for building faithful recreations of old UIs

• UpdatedSep 7, 2025
• CSS

Material Design Web Components

• UpdatedFeb 14, 2026
• SCSS

🚀A modern, comprehensive, flexible design system and React UI library. 🎨 Provide more than 3000+ Design Tokens, easy to build your design system. Make Semi Design to Any Design. 🧑🏻‍💻 Design to Code in one click

• UpdatedFeb 13, 2026
• TypeScript

Open-source UI component library and front-end development framework based on Tailwind CSS

• UpdatedFeb 6, 2026
• HTML

Fastest way to build modern websites

• UpdatedFeb 17, 2026
• JavaScript

A design system built by IBM

• UpdatedFeb 20, 2026
• JavaScript

Unstyled UI components for building accessible web apps and design systems. From the creators of Radix, Floating UI, and Material UI.

• UpdatedFeb 20, 2026
• TypeScript

a react-based framework that provides accessibility, modularity, responsiveness, and theming in a tidy package

• UpdatedFeb 19, 2026
• JavaScript

⚛️ React primitive UI components built with styled-system.

• UpdatedJul 27, 2023
• JavaScript

🌈🕹 Windows 95 style UI component library for React

• UpdatedJan 14, 2024
• TypeScript

Clarity is a scalable, accessible, customizable, open source design system built with web components. Works with any JavaScript framework, built for enterprises, and designed to be inclusive.

• UpdatedMar 16, 2023
• TypeScript

Elastic UI Framework 🙌

• UpdatedFeb 20, 2026
• TypeScript