All design systems

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The system behind Jira, Confluence and Trello, distributed as @atlaskit packages with design tokens, dark mode and Atlassian Sans/Mono.

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Palantir's React UI toolkit, optimized for complex, data-dense desktop web applications (not mobile-first). Licensed under an Apache 2.0-based Blueprint License that asks you not to pass derivatives off as Palantir products.

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SEEK Group's themeable React design system, built with vanilla-extract and themes for SEEK, Jobstreet and Jobsdb brands. Known for Playroom, a design-in-code prototyping tool.

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Esri's framework-agnostic web components design system for ArcGIS and map-focused apps. 1.0 shipped in January 2023; strong RTL and numbering-system localization (including Arabic numerals).

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Workday's design system for HR and finance products, delivered as Canvas Kit (React) with tokens and icons.

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VMware's enterprise design system. The Angular implementation is active; Clarity Core (web components) was archived on 17 February 2026.

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Wikimedia's design system for Wikipedia and sister projects, built with Vue 3 and tokens.

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Freshworks' web components design system for Freshdesk/Freshservice apps and marketplace developers.

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Elastic's React library and design language for Kibana and Elastic Cloud, built for data-dense interfaces.

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Contentful's open source design system for building and extending Contentful apps. v5 refreshed the look and switched to Phosphor Icons; the Figma libraries were updated to v6.

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Zendesk's design system for its customer service products, with React components and theming.

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Vercel's design system, documented publicly. Only the Geist font and icons are open source.

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Pinterest's React design system, known for strong accessibility documentation.

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HashiCorp's design system for HCP and its products: Ember components, tokens and the Flight icon set.

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HPE's design system, built on Grommet (React) with the `grommet-theme-hpe` theme and `hpe-design-tokens`. Theme v8 (October 2025) introduced "Landmark", HPE's refreshed visual language, switching to the Graphik typeface and new HPE icons.

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InstUI, the open source (MIT) React design system behind Canvas LMS, used by millions of learners. 100+ packages, 4 built-in themes including high contrast, WCAG 2.1 AA, RTL support.

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Salesforce's design system for the Lightning platform, implemented through Lightning Web Components. SLDS 2 ("Cosmos") adds styling hooks and agentic experience patterns.

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Cisco Webex's design system with web components, tokens and icons.

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Nordhealth's web components design system for healthcare software. Docs are public; code ships via npm, not an open repo.

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Okta's design system for its identity products, built on MUI with Okta tokens and themes.

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GitLab's design system, implemented as GitLab UI (Vue) and hosted on GitLab.com.

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Twilio's accessible React design system with theming and tokens, used across Twilio Console and Segment.

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Red Hat's open source design system for enterprise and hybrid-cloud products such as OpenShift. Current version: PatternFly 6.

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Mozilla's design system for its websites, such as mozilla.org.

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Unstyled accessible Primitives and a styled Themes library from WorkOS; the base for shadcn/ui and many brand systems.

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Web components system for Red Hat's brand and marketing sites (separate from product UI).

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JetBrains' React library for its web products (YouTrack, Hub, TeamCity web).

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Grafana's design system, implemented in `@grafana/ui` inside the Grafana monorepo.

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SAP's Fiori design language implemented as framework-agnostic UI5 Web Components (with React wrappers) and OpenUI5.

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Sprout Social's open source design system with "Racine" React components, tokens and content guidelines.

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Canonical's Sass/CSS framework for ubuntu.com and its products, with a React companion library.

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monday.com's open source React design system for the Work OS and its app marketplace.

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Wix's React library for the Wix Business Manager and app-market developers.

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The `@wordpress/components` library powering the Gutenberg block editor and WordPress admin.