FluentFlyout: A Sleek, Modern Flyout Menu for Windows Devs Who Crave Polish

If you've ever used a modern Windows app and thought, "This flyout menu could look a lot better," you're not alone. Microsoft's Fluent Design System is great on paper, but actual implementation in third-party tools often feels clunky or half-baked. That's where FluentFlyout comes in. It's a lightweight, open-source flyout menu built with Fluent Design in mind, and it's refreshingly simple to use.

I stumbled across this on GitHub while looking for a way to add a clean volume/brightness overlay to my Windows dev setup. Instead of hacking together something ugly, I found a project that just works and looks damn good doing it. Let's dig in.

What It Does

FluentFlyout is a Windows native flyout widget. Think of it as a modern replacement for the old-school volume or brightness popups that Windows still ships. It displays a smooth, animated overlay with controls for things like volume, brightness, or any custom action you bind to it.

Under the hood, it's built with C# and WinUI 3, using the Windows App SDK. So it's not another Electron monstrosity — it's lean, native, and integrates with the OS via system APIs. You can trigger it with a keyboard shortcut, mouse gesture, or even a hotkey from your own app.

Why It’s Cool

A few things make this stand out from the usual "I made a volume slider" project:

1. Fluent Design done right. The animations feel buttery smooth — acrylic blur, reveal highlights, and light/dark mode support. It doesn't try to do too much.

2. Modular and extensible. The flyout is container-based. You can swap out the volume display for a brightness slider, a media playback control, or even a custom action. The codebase is small and well-structured, so extending it is straightforward.

3. System tray integration. It lives in the system tray and respects DPI changes, multi-monitor setups, and Windows scale settings. Not just a toy — it's production-ready for your own tooling.

4. No garbage UI frameworks. WinUI 3 means it feels like a first-class Windows component, not a web wrapper. Startup is instant, memory usage is negligible.

How to Try It

You need Windows 10 1809+ and the Windows App SDK runtime. That's it.

Clone the repo, build it, or grab the precompiled binary from the releases section:

git clone https://github.com/unchihugo/FluentFlyout.git
cd FluentFlyout
dotnet build -c Release

Or just head to the GitHub releases and download the latest .msix or standalone .exe.

Once running, it sits in your system tray. Hit Win + Alt + V to toggle the volume flyout, or bind it to any key you want via the settings file.

Final Thoughts

FluentFlyout is one of those small projects that does one thing and does it well. If you're a Windows dev building tools that need a quick, polished flyout for user controls (think brightness sliders for a remote control tool, or a custom media overlay for a browser extension), this is a solid base. It's not trying to be a framework — it's a practical, ready-to-use component that you can drop in and extend.

For anyone who cares about UX polish but doesn't want to spend weeks building and debugging a flyout from scratch, this is a gem. Give it a spin.

Found this useful? Follow @githubprojects for more cool dev tools.