Design Systems

Mozilla's Protocol design system for Mozilla and Firefox websites, providing a common design language, reusable coded components, and content and accessibility guidelines.

New York State's shared library of accessible web components, design tokens, and guidelines for agencies building mobile-friendly digital services.

Nordhealth's Nord Design System, production-grade web components, design tokens, Tailwind CSS support, and Figma toolkit behind its healthcare software products.

Tractie, Dutch Railways' design system for internal employee applications, with fundamentals, components, patterns, and support for web, Mendix, and Android developers.

The NSW Government's open source digital design system, a toolkit of core styles, components, templates, and guidance for distinctly NSW digital services.

The Government of Ontario's design and coding standards for building public products, with documented components, release notes, and web component packages.

Orange's toolkit of design guidelines and interface components for web, Android, iOS, and Flutter, with Figma UI kits and open source development libraries.

Palantir's open source Blueprint toolkit, a React-based UI library optimized for complex, data-dense desktop web applications, now on version 6.

Pluralsight's Pando design system, the successor to its classic library, with React components, themes, icons, specs, and usage guidelines for its learning platform.

Porsche's toolkit for high-quality web applications, with Figma libraries, web components wrapped for React, Angular, and Vue, and brand-driven UX guidelines.

Power Home Remodeling's open source Playbook design system, with matching components for React, Ruby on Rails, and Swift plus Figma resources and theming.

Razorpay's open source Blade design system, documented in Storybook with tokens, theming, motion, accessible components, and an MCP server for AI-assisted building.

Red Hat's open source PatternFly design system for enterprise products, with HTML and React implementations, charts, design tokens, and extensive usage guidance.

REI Co-op's open source Cedar design system, with Vue 3 components, design tokens for web, iOS, and Android, and guidance for accessible, responsive experiences.

Salesforce's Lightning Design System, now SLDS 2, offering styling hooks, utility classes, icons, accessibility rules, and AI design guidance for building on Salesforce.

Samsung's One UI design guidelines for Galaxy devices, explaining how apps should look and behave on phones, foldables, and wearables running Samsung's Android interface.

The SAP Design System, home of SAP Fiori for web, iOS, and Android plus the SAP Digital Design System, built for accessible, enterprise-grade experiences.

SEEK's open source Braid design system, a themeable set of accessible React components, patterns, templates, and styling primitives for SEEK Group products.

Segment's Evergreen, an open source React UI framework for ambitious web products, with polished components that work out of the box and compose freely.

ServiceNow's Horizon Design System, the source of truth for experience design on the Now Platform across Workspace, Service Portal, Native Mobile, and Core UI.

Shopify's Polaris, the unified UI framework built on web components that apps use across the Shopify Admin, Checkout, customer accounts, and POS.

Sigma's Design System 3, a commercial Figma design system and UI kit with variables-based tokens, dark mode, liquid glass styling, and customizable documentation.

Škoda's award-winning Flow design system, with UI libraries and guidelines for web, mobile apps, and in-car interfaces plus imagery and UX writing rules.

Sprout Social's Seeds creative hub, covering brand, visual and writing guidelines, patterns, and Racine, the company's library of reusable React components.