A collection of utilities, React components, and web components for building web applications with Microsoft's Fluent Design System.
Fluent UI is an open-source design system and component library developed by Microsoft for building web applications. It provides a collection of utilities, React components, and web components that implement Microsoft's Fluent Design language. The project helps developers create consistent, accessible, and modern user interfaces across different frameworks and platforms.
Frontend developers and teams building web applications that need to integrate with Microsoft's design ecosystem or require enterprise-grade, accessible UI components. Particularly useful for organizations using Microsoft 365, Office, or Edge who want consistent UI across products.
Developers choose Fluent UI for its production-ready components backed by Microsoft's extensive testing and real-world usage in major products. It offers multiple implementation options (React v8/v9 and Web Components) with strong accessibility guarantees and comprehensive theming capabilities.
Fluent UI web represents a collection of utilities, React components, and web components for building web applications.
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Components are accessible by default following WCAG guidelines, as emphasized in the README, ensuring compliance for large-scale applications.
Offers React v8, v9, and Web Components, providing flexibility for different tech stacks, detailed in the project table for varied use cases.
Used by Microsoft 365, Office, and Edge, guaranteeing robustness and long-term support, as highlighted in the 'Used By' section.
Integrates Griffel, a performant CSS-in-JS solution mentioned in the features, optimizing runtime efficiency for component styles.
Provides tools and guidance for migrating from v8 to v9, supporting legacy codebases with minimal disruption, as noted in the migration overview.
Maintaining both v8 and v9 with different architectures creates confusion and requires migration efforts, a complexity the README acknowledges by encouraging moves to v9.
Web components are still in beta (as per the NPM version badge), meaning they may be less stable and prone to breaking changes for production use.
The theming system is tailored to Microsoft's Fluent Design, making it challenging to fully customize for brands that don't align with this aesthetic without significant effort.
Styling depends on Griffel, adding a dependency and learning step for developers unfamiliar with this CSS-in-JS approach, which may slow onboarding.