See where your disk space has gone.
A fast, native disk usage visualizer for macOS, Windows and Linux, written in Rust —
a modern tribute to Disk Inventory X by Tjark Derlien.
Disk Inventory NG scans a volume or folder and draws every file as a rectangle in a cushion treemap: the bigger the file, the bigger the rectangle; the colour tells you what kind of file it is. Huge forgotten downloads, caches and VM images jump right out.
- Cushion treemap — squarified layout with 3D cushion shading (the KDirStat algorithm), so nested folders stay readable.
- Three synchronized views — folder hierarchy, treemap and file-kind statistics. Select a file anywhere and the other views follow.
- Fast — scans directories in parallel on all CPU cores (≈1.4 million entries in under 7 seconds on an Apple Silicon Mac, warm cache).
- File kinds — every extension with its total size and file count, coloured like the treemap. Click one to list its files.
- Selection list — the largest files, filterable by kind and searchable by name.
- Inspector — size, share of the total, file count, kind and age of the selection.
- Zoom into any folder (double-click or ⌘/Ctrl ↓) and back out (⌘/Ctrl ↑).
- Act on it — show in Finder / Explorer / your file manager (⌘/Ctrl R), Open, or Move to Trash (Recycle Bin on Windows); the view updates instantly without a rescan.
- Rescan just one folder after cleaning up (right-click → Rescan This Folder), in the background, instead of rescanning the whole disk.
- Volume list on launch that follows disks as they are mounted and unmounted.
- Counts hard links once and doesn't wander into other volumes.
Download the package for your system from the latest release:
| System | Download | How to install |
|---|---|---|
| macOS 11+ (Apple Silicon & Intel) | DiskInventoryNG-x.y.z.dmg |
Open it and drag Disk Inventory NG onto Applications. |
| Windows 10/11 (x64) | DiskInventoryNG-x.y.z-windows-x64.zip |
Unzip anywhere and run Disk Inventory NG.exe. |
| Linux PC (x86_64) | DiskInventoryNG-x.y.z-x86_64.AppImage |
chmod +x it and run it. |
DiskInventoryNG-x.y.z-linux-x86_64.tar.gz |
Unpack into ~/.local or /usr/local (binary, desktop entry, icons). |
|
| Raspberry Pi / ARM64 Linux (64-bit OS) | DiskInventoryNG-x.y.z-aarch64.AppImage or …-linux-aarch64.tar.gz |
As above. |
| Raspberry Pi (32-bit OS) | DiskInventoryNG-x.y.z-linux-armhf.tar.gz |
As above. |
Linux builds need glibc 2.35+ (Ubuntu 22.04, Debian 12, Raspberry Pi OS Bookworm or newer) and OpenGL; on a Raspberry Pi, a Pi 4 or 5 is recommended.
Note
The builds are not code-signed by Apple or Microsoft. On macOS, right-click
the app and choose Open the first time (or run
xattr -dr com.apple.quarantine "/Applications/Disk Inventory NG.app").
On Windows, SmartScreen may warn: choose More info → Run anyway.
Tip
On macOS, give the app Full Disk Access in System Settings → Privacy & Security to scan your whole disk. Without it, macOS hides protected folders (Mail, Safari, …) and they are skipped.
Requires a stable Rust toolchain. On Debian/Ubuntu also install
libxcb-render0-dev libxcb-shape0-dev libxcb-xfixes0-dev libxkbcommon-dev libgl1-mesa-dev.
git clone https://github.com/surak/diskInventory-NG.git
cd diskInventory-NG
cargo run --release # start with the volume list
cargo run --release -- ~/Downloads # or scan a folder right awayscripts/bundle-macos.sh # → target/release/bundle/Disk Inventory NG.app
scripts/make-dmg.sh # → target/release/bundle/DiskInventoryNG-<version>.dmg
scripts/make-dmg.sh universal # arm64 + x86_64 (rustup target add x86_64-apple-darwin)
scripts/package-linux.sh # → .tar.gz, plus an .AppImage if appimagetool is installed
pwsh scripts/package-windows.ps1 # → .zip with the .exe (icon embedded)Pushing a tag like v0.2.0 builds all of these on GitHub Actions and attaches
them to a release.
make-dmg.sh lays out the installer window through Finder, so the first run
may ask to allow your terminal to control Finder.
The app icon — an isometric 3D treemap, in homage to the original — is not a
bitmap in the repo: the app draws it itself with its own treemap renderer
(disk-inventory-ng --write-icon icon.png 1024).
cargo run --release -- --scan-only ~/Library| File | Purpose |
|---|---|
src/scan.rs |
Parallel directory walk (rayon), flattened into an arena tree with per-kind statistics |
src/treemap.rs |
Squarified layout and cushion shading, rendered to a texture |
src/app.rs |
The egui user interface |
src/icon.rs |
Procedural isometric treemap app icon |
src/volumes.rs |
Mounted volume discovery |
src/platform.rs |
OS specifics: file sizes, file manager, shortcuts |
src/kinds.rs |
File kind colour palette |
scripts/ |
Packaging: .app + DMG, Linux tarball + AppImage, Windows zip |
On macOS and Linux, sizes are allocated sizes on disk (blocks × 512), like Finder's "on disk" figure; on Windows they are file sizes.
Disk Inventory NG exists because of Disk Inventory X by Tjark Derlien. For years, Disk Inventory X was the tool Mac users reached for when their disk was mysteriously full. Its idea of three synchronized views — folder hierarchy, cushion treemap and file kinds — is the design this project follows, and the app icon is a homage to its isometric 3D treemap.
Thank you, Tjark, for creating Disk Inventory X, for sharing it with the world for free and as open source (under the GPL), and for showing how useful a picture of your disk can be. This project is our attempt to carry that idea forward, on modern macOS and now on Windows and Linux too.
Disk Inventory X itself stood on the shoulders of others, and so do we:
- KDirStat by Stefan Hundhammer, whose treemap layout Disk Inventory X used, and WinDirStat, which inspired it.
- Cushion Treemaps (Jarke J. van Wijk & Huub van de Wetering, 1999) and Squarified Treemaps (Mark Bruls, Kees Huizing & Jarke J. van Wijk, 2000).
- Treemaps, invented by Ben Shneiderman.
Disk Inventory NG is an independent reimplementation in Rust. It contains no code or artwork from Disk Inventory X and is not affiliated with or endorsed by its author. "Disk Inventory X" is the name of Tjark Derlien's original application.
MIT © 2026 Alexandre Strube