An unofficial Flutter implementation of Microsoft's Windows UI (WinUI) for building native Windows apps with Fluent Design.
Fluent UI is an unofficial Flutter package that implements Microsoft's Windows UI (WinUI) design system, allowing developers to build native Windows applications with Fluent Design aesthetics. It provides a comprehensive set of widgets and components that mirror WinUI's look and behavior, solving the need for platform-authentic UI in Flutter's Windows support.
Flutter developers targeting Windows platforms who want their apps to adhere to Microsoft's Fluent Design guidelines, especially those building desktop applications that require a native Windows feel.
Developers choose Fluent UI because it offers a production-ready, community-maintained alternative to Material and Cupertino for Windows, with extensive localization, customization options, and close alignment to official WinUI documentation.
Microsoft's WinUI3 in Flutter.
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Widgets like NavigationView and CommandBar are built based on official WinUI documentation, ensuring they match Microsoft's specifications for a native Windows experience.
Includes out-of-the-box support for over 30 languages, with community contributions and a clear process for adding new localizations, reducing setup for global apps.
Supports custom accent colors or system-level theming via plugins like system_theme, allowing apps to align with brand or user preferences seamlessly.
Open-source with acknowledged contributions for features like acrylic effects and localization, fostering ongoing improvements and plugin integrations.
The project is maintained by one person, leading to potential delays in reviewing pull requests and addressing issues, as noted in the README.
Unsupported languages can cause app crashes, forcing developers to manually add or manage localizations, which adds complexity and maintenance overhead.
Designed primarily for Windows, so using it in cross-platform Flutter apps may require extra effort to ensure UI consistency on other platforms like mobile or web.
Features such as acrylic effects rely on third-party plugins (e.g., flutter_acrylic), introducing additional dependencies and potential compatibility issues.