Material UI: Ready-to-use foundational React components, free forever. It includes Material UI, which implements Google's Material Design.

An enterprise-class UI design language and React UI library

Storybook is a frontend workshop for building UI components and pages in isolation. Made for UI development, testing, and documentation.

The best design tools and plugins for everything 👉

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

A high quality UI Toolkit built on Vue.js 2.0

System design interview for IT companies

💅🏻 ⚒ A collection of awesome design systems

Radix Primitives is an open-source UI component library for building high-quality, accessible design systems and web apps. Maintained by @workos.

𝙃𝙪𝙜𝙚 collection of Tailwind MIT licensed (free) components, sections and templates 😎

The CSS design system that powers GitHub

🌲 Evergreen React UI Framework by Segment

A collection of libraries and tools that help you build adaptive, accessible, and robust user experiences.

Functional css for humans

Full Modular Monolith application with Domain-Driven Design approach.

The adaptive interface system for modern web experiences.

A React Component library implementing the Base design language

⬢ Style props for rapid UI development

The U.S. Web Design System helps the federal government build fast, accessible, mobile-friendly websites.

Shopify’s design system to help us work together to build a great experience for all of our merchants.