Clarity Design System vs U.S. Web Design System

Clarity Design System is a free, open-source toolkit for enterprise-focused interface design, with inclusion at its center. It combines design assets—including Figma themes, icons, color libraries, fonts and downloadable SVG icons—with more than 30 components and over 200 icons. Clarity Core provides reusable Web Components for Angular, React, Vue, other JavaScript frameworks, or projects without a framework. It is compatible with Webpack, RollupJS, Parcel and most framework CLIs. React projects need the additional @cds/react wrapper because React does not fully interoperate with custom elements. The datagrid supports more than a dozen features and thousands of data entries. Clarity follows WCAG 2.1 AA guidelines and has a dedicated accessibility team; accessibility checks cover multiple tools, screen readers and browser combinations. The code is licensed under MIT. Community questions go through GitHub Discussions, while issues and feature requests are tracked in GitHub Issues. Each major release is actively supported for six months after the next major release becomes available. Clarity Core currently requires a JavaScript bundler to import its dependencies.

U.S. Web Design System (USWDS) is an open-source toolkit for government teams creating accessible, mobile-friendly websites. It combines principles, guidance, and code with components that include user-experience, accessibility, and implementation guidance. Teams get patterns, design tokens, utilities, and page templates, then install and compile the system to customize projects. Node and npm are the recommended setup, and USWDS can be added as an npm dependency. Downloadable design kits support Figma and Sketch. USWDS says its guidance and code address Section 508 and 21st Century IDEA requirements from the outset. Version 3.0 supports Chrome, Firefox, Safari, and Edge, but not Internet Explorer 11. Security practices include Snyk dependency checks, CodeQL analysis, release vulnerability reports, and patches for 1.x and 2.x branches. It is free to download and self-host.