The open-source app built with WinUI 3 and Mica material — feels like a native Windows 11 utility, not a third-party tool. Removes browser cache, temp files, shader caches and app leftovers in seconds. MIT licensed, by builtbybel.
Most PC cleaners on Windows 11 still ship with Win32 layouts from 2008 — clunky dialogs, missing rounded corners, no Mica. The Fluent Cleaner is built ground-up on WinUI 3 with full Mica material support, exactly how Microsoft intended Windows 11 utilities to look and feel.
Under the surface, this cleaner targets the same junk locations as any serious utility — Microsoft Edge cache, Windows %TEMP%, Visual Studio NuGet packages, GPU shader caches — but does it through a Fluent UI that actually fits your OS. Average scan: under 30 seconds.
A genuine Fluent Design PC cleaner — not a Win32 dialog with a "Windows 11 skin" pasted on top.
The app is composed natively in WinUI 3 — Mica material, acrylic blur, animated reveals. No web view, no Electron, no fake Fluent skin.
Run scans headlessly from PowerShell or cmd. Automate cleaning through Task Scheduler.
Skips registry cleaning entirely. Only confirmed junk locations are touched — your system stays stable.
No network calls, no analytics, no crash reports. Fully offline and air-gap compatible.
Six independent scan databases cover browsers, Windows temp, app caches, GPU shaders, Office cache and Visual Studio artefacts in one pass.
Grab the latest release from the builtbybel GitHub repo. One archive, no installer tricks.
The multi-database engine scans browsers, Windows temp, app caches and shader stores in under 30 seconds.
See exactly what was found, deselect anything you want to keep, hit Clean. Done.
Get the Microsoft Fluent Design PC cleaner that actually feels native. Open-source, MIT licensed, by builtbybel.