Find your way through every file.Cairn is a calm, local-first desktop app that gives you a single, quiet window into everything on your Windows PC: your files, the space they take, the apps you've installed, the junk you haven't cleared, and anything that looks worth a second look.It's not antivirus. It's not a cleaner that nags you. It's a clear view of your own machine — and it tells you which things to worry about without the noise.Everything runs on your device. Your files never leave it.What's inside Files — Browse your whole filesystem in a clean, fast table. Sort, search, and filter by date, size, and type. See folder sizes at a glance. Find — Scan recursively and surface duplicates, streamed in batches so results appear instantly, even on large drives. Safety Check — A risk inspector that flags suspicious items — double extensions, executables hiding in Temp, loose scripts, unusual startup entries, macro-enabled documents — and can run a deep scan on anything you want a closer look at. Calm by design. No red banners, no panic. Includes a Real-time Monitor which runs silently in the background. Also allows you to check network activity right from the app. System Junk — Find temp files, browser and package caches, logs, and Recycle Bin contents, then clear them in one click. Apps & Games — A full inventory of what's installed, with leftover "ghost" entries detected and clean uninstalls. Home — Device details, drive health, a storage treemap, and quick access to where you've been. More coming soon! Any feedback would be greatly appreciated in improving the app. Built to stay out of your wayLight, dark, and system themes. Adjustable density and text size. Optional auto-start and tray behavior. A single native binary — no Electron, no bloat.Private by designAll scanning and analysis happen on-device. Cairn makes no network calls with your file contents. What's on your machine stays on your machine.Most people open Cairn once a week, see what's there, and close it knowing their machine is in good shape. That's exactly the point.Currently Windows-only (Apple support coming soon).