Design Systems

SumUp's open source Circuit UI, a React component library and design system for the web, documented in Storybook with tokens, icons, and forms.

Solar, the Sunrise design system that gives every digital team at the Swiss telecom reusable web components, foundations, page sections, and accessibility guidance.

Tailwind CSS, the utility-first CSS framework for building any design directly in markup, with a configurable theme that acts as a shared design token layer.

Ahoy, Teamleader's design system for building user-friendly, consistent interfaces across its CRM products, with foundations, components, governance, and accessibility guidelines.

Thumbtack's Thumbprint design system, assets and guidelines for consistent experiences across web, iOS, and Android, including tokens, components, atomic CSS, and content design.

Paste, the open source design system created at Twilio, with accessible React components, tokens, icons, patterns, and page templates for consistent product experiences.

The U.S. federal government's design system for building accessible, mobile-friendly websites, with components, design tokens, patterns, and implementation guidance.

The official design system of the United Arab Emirates, guiding federal government entities on content, components, blocks, and patterns for their websites.

Uber's Base design system, the unified framework defining user interface foundations across Uber's products, with Base Web as its open source React implementation.

Vercel's Geist design system for consistent web experiences, documenting brand assets, a high-contrast color system, grid, icons, and React components.

Visa's Product Design System for inclusive digital experiences, offering guidelines, design kits, and Nova libraries for React, Angular, Flutter, and CSS.

Terra, the VTS design system focused on commercial real estate software, built to help teams innovate quickly across all VTS products.

The Washington Post Design System, a growing library of design tokens and interactive components purpose-built for washingtonpost.com reader experiences.

Codex, the Wikimedia design system, with a style guide, design tokens, Vue 3 components, icons, and composables for building Wikipedia and MediaWiki interfaces.

Wanda, Wonderflow's open source design system for its digital products, with brand foundations, symbols, motion, themes, design tokens, and React components.

Workday's open source Canvas design system, reusable UI elements, tokens, icons, and guidelines delivered through the Canvas Kit React libraries.

Radix, maintained by WorkOS, offers free, open source React themes, unstyled primitives, icons, and color scales for building high-quality, accessible interfaces.

Zendesk Garden, the design system where Zendesk grows the components, standards, and tools its product teams use daily, now on version 9.