Design System GitHub Repositories (2026) · Open Source Tools

React Native UI library built on the Eva Design System: 30+ themeable, accessible components for iOS, Android and web. TypeScript, React 19 / RN 0.81, Eva and Material themes with runtime light/dark switching, on-demand style compilation.

Turn Claude into a senior design architect: DTCG tokens, 52 components, WCAG 2.2 AA-AAA, 138 design systems, any-framework code, and 50 objective gates that fail the build instead of faking success.

Svelte implementation of the Carbon Design System

React components for Cloudscape Design System

Design data, including design tokens, component schemas, and tooling for Spectrum, Adobe's design system.

Untitled UI React is the world’s largest collection of open-source React components built with Tailwind CSS and React Aria. Just copy, paste, and build.

The React component library for startups, built with Chakra UI.

The most complete color system for SwiftUI: 740 colors, 20 semantic tokens, dark mode and WCAG contrast built in, and a theme from any brand hex. Docs: colortokenskit.com

USWDS 3.0 components built in React

A platform to build useful communities that aim to tackle global problems

A set of React components for the PatternFly project.

Helios Design System

A design system by Contentful

Fundamental Library for Angular is SAP Design System Angular component library

The accessible HTML-Standard

The open-source frontend infrastructure for the AI-native web

Yoga design-system: a scientific system of practices made to help each one of us achieve our highest potential and experience.

🍭 Lobe MyGo - the UI kit for native Go apps: Lobe UI design language for MyGo, drawn on the GPU in pure Go

A premium theme and card library for Home Assistant: fifty-five cards, a light and dark theme in fifteen palettes, five automatic dashboards, a wall panel and kiosk mode for tablets, and a settings panel — one design for all of Home Assistant, installed through HACS

Culture Amp's Kaizen Design System :seedling: