🆚 Fluent vs. USWDS

Fluent Design System is Microsoft's cross-platform design language that defines how user interfaces should look and behave across Windows, web, and mobile applications.

It uses a unified set of design tokens for colors, spacing, icons, and typography, and supports adaptive layouts for different screen sizes.

The U.S. Web Design System (USWDS) is an open-source design system developed by the United States government to help federal agencies build fast, accessible, and mobile-friendly websites.

It provides a library of reusable UI components, design patterns, and production-ready code with built-in compliance for standards such as Section 508 and the 21st Century IDEA, along with utilities, templates, and standardized design variables for color, typography, and spacing.

Popularity

Determined by the number of sites using each technology.

• 🥉 Third most popular in Germany in the Design Systems category.
• 🥉 Third most popular in the United Kingdom in the Design Systems category.
• ⭐ 5th most popular in the United States in the Design Systems category.

• 🥈 Second most popular in the United States in the Design Systems category.
• 🔥 18th most popular in the United States in the UI Frameworks category.

Top sites

Top-ranked sites that use these technologies.

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• Fluent technology profile
• Microsoft company profile

• USWDS technology profile
• GSA company profile