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Fluent UI

Fluent UI is a free, open-source desktop app for Windows, macOS and Linux. Microsoft's WinUI3 in Flutter. It has 3,475 GitHub stars and is released under the BSD-3-Clause license. Its source code is on GitHub at bdlukaa/fluent_ui.

github.com/bdlukaa/fluent_ui (opens in a new tab)

About Fluent UI

Design beautiful native Windows apps using Flutter Unofficial implementation of Windows UI for Flutter. It's written based on the official documentation.

FAQ

Fluent UI FAQ

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What is Fluent UI?

Fluent UI is a free, open-source desktop app for Windows, macOS and Linux. Microsoft's WinUI3 in Flutter. It has 3,475 GitHub stars and is released under the BSD-3-Clause license. Its source code is on GitHub at bdlukaa/fluent_ui.

Is Fluent UI free and open source?

Yes. Fluent UI's source code is public on GitHub under the BSD-3-Clause license, which is OSI-approved or FSF-free, so you can use, copy and change it for free.

How do I install Fluent UI?

Download the installer for Windows, macOS and Linux from its GitHub Releases page (latest: v4.16.1) or the project website.

Is Fluent UI still maintained?

The repository's most recent commit was on Sep 28, 2026. appsgit only lists apps whose repository had a commit in the last six months.