Ultra-fast disk space analyzer — find what's filling your SSD or hard drive in seconds. DiskRaptor is a free, open-source, cross-platform disk usage analyzer and storage cleaner for Windows, macOS and Linux, built with Rust + Tauri 2. A modern successor to WinDirStat / DaisyDisk: scan millions of files, visualize disk usage, find duplicates and free up space.
Visit the official website: https://www.diskraptor.com — documentation, screenshots and download links.
DiskRaptor scans directories using a parallel jwalk engine (macOS), walkdir (Windows/Linux) and renders results in a virtual tree view capable of handling 20+ million files without UI lag.
| Files | Directories | Total size | Scan time |
|---|---|---|---|
| 12,109,741 | 100,292 | 561.21 GB | 22.77 s |
Sample figures from a real large-drive scan (your drive will differ).
| DiskRaptor | WinDirStat | WizTree | DaisyDisk | TreeSize Free | |
|---|---|---|---|---|---|
| Price | Free, MIT open source | Free | Free for personal use | Paid | Free / paid Pro |
| Windows / macOS / Linux | ✅ / ✅ / ✅ | Windows only | Windows only | macOS only | Windows only |
| Duplicate file finder | ✅ (xxHash3) | ❌ | ✅ | ❌ | Partially (Pro) |
| 3D galaxy view | ✅ | ❌ | ❌ | ❌ | ❌ |
| Handles 10M+ files | ✅ (virtual tree) | Slow | ✅ (MFT) | ✅ | ✅ |
| No tracking / offline | ✅ | ✅ | ✅ | ✅ | ✅ |
WinDirStat hasn't seen a major release in years; WizTree is Windows-only and closed source. DiskRaptor is the free, open-source, cross-platform alternative.
┌──────────────────────────────┐
│ Tauri 2 (Rust) │ ← Window, menus, native dialogs, IPC
│ ┌────────────────────────┐ │
│ │ System WebView │ │ ← WKWebView (macOS) / WebView2 (Win) /
│ │ (frontend/index.html) │ │ WebKitGTK (Linux)
│ │ ┌──────────────────┐ │ │
│ │ │ Frontend (JS) │ │ │ ← DOM-based virtual tree, diagrams,
│ │ │ app.js, scan.js, │ │ │ galaxy 3D view, i18n
│ │ │ diagrams.js, ... │ │ │
│ │ └──────────────────┘ │ │
│ │ ↕ tauri invoke │ │ ← JSON IPC (Rust commands)
│ │ ┌──────────────────┐ │ │
│ │ │ Rust Commands │ │ │ ← scan, file_ops, settings, trash,
│ │ │ (main.rs) │ │ │ SMART, browser cleanup
│ │ └──────────────────┘ │ │
│ └────────────────────────┘ │
│ ↕ crate │
│ ┌────────────────────────┐ │
│ │ diskraptor_scanner │ │ ← Parallel directory walker (Rust)
│ └────────────────────────┘ │
└──────────────────────────────┘
The UI is pure JavaScript rendered in the system webview (no bundled Chromium — Tauri uses the OS webview: WKWebView on macOS, WebView2 on Windows, WebKitGTK on Linux). Communication with the native layer uses Tauri's IPC (window.__TAURI__.invoke). The scanner is a Rust crate (diskraptor_scanner).
- Parallel jwalk engine (macOS) -- Multi-threaded directory traversal, 2-6x faster than single-threaded
- walkdir engine (Windows/Linux) -- Reliable cross-platform scanning
- Permission resilience -- Gracefully handles access-denied folders, logs errors, continues scanning
- 20M node limit -- Scans entire drives with millions of files
- Multi-path scan -- Scan multiple paths sequentially (
path1; path2; path3)
- Virtual TreeView -- Renders only visible DOM nodes, handles 10M+ files
- Pie Chart + Squarified Treemap + Bar Chart + Galaxy 3D View -- Top 50 largest files, hover tooltip, click to jump to tree
- File type icons -- Emoji icons per file type (images, video, audio, archives, code, etc.)
- Percentage bars -- Colored gradient bars per tree row showing size relative to parent
- File age column -- Last modification date, sortable
- Preferences > Scan idle timeout controls how long a scan may go without completing work. The default is 120 seconds; values from 0 to 3600 are accepted. Set 0 to disable the watchdog; Cancel remains available. This is not a total scan-duration limit.
- On timeout, diagnostics show recorded active directories/operations and recent OS errors. Directory enumeration cannot always identify an exact blocked file. Windows enumeration does not request UAC elevation, and the diagnostics cannot detect hidden permission dialogs.
- Retry with a longer timeout restarts the same path from the beginning, doubles the timeout (minimum 120, maximum 3600 seconds), and leaves the saved preference unchanged. Retries are never automatic.
- Check the connection and responsiveness of an external drive before retrying. Cancellation cannot forcibly interrupt a blocked OS call; it may remain pending until the OS returns. Its late progress is isolated from subsequent scans.
- Windows native enumeration reports activity within a directory. The jwalk fallback (also used on Linux) still batches whole directories and may time out on a very slow batch; increase or disable the idle timeout in that case.
- Context menus -- Right-click anywhere (Tree, Top 50, Diagram): Open in Explorer, Open Terminal, Properties, Copy Path, Copy Size, Move to Trash, Jump in Tree, Scan this Folder
- Keyboard navigation -- Arrow keys to navigate tree, Enter to open files
- Drag & drop -- Drag folders from Finder/Explorer onto the app to scan
- Resizable panels -- Drag to resize tree, diagram, detail panel
- Dark / Light mode -- Toggle with moon/sun button, persists in settings
- 25 languages -- Full i18n with auto-detection and language switcher
- Find Duplicates -- Detect duplicate files by content hash (xxhash3)
- Trash Recovery -- Browse, restore, or permanently delete trashed files
- Empty Folders -- List empty directories, click to jump to them
- Find Files -- Search by filename pattern in scanned results
- File type filter -- Show only images, video, audio, archives, or PDFs
- Export HTML Report -- Standalone shareable report with stats + chart
- Export CSV/JSON -- Export tree data or raw stats
- Clear Scan -- Reset all results without reloading
- macOS -- Universal binary (x86_64 + arm64), Apple Silicon native
- Windows -- NSIS installer, native Windows icons via
SHGetFileInfoW - Linux -- DEB package (Debian/Ubuntu)
Pre-built binaries are available on the Releases page, or grab the latest version directly from the official website: https://www.diskraptor.com.
Microsoft Store: Install DiskRaptor from the Microsoft Store
Mac App Store: Install DiskRaptor from the Mac App Store
| Platform | Format |
|---|---|
| macOS | .dmg (signed + notarized) or .pkg |
| Uninstall | bash installer/uninstall.sh (macOS) |
| Windows | .exe (NSIS Installer) |
| Linux | .deb (Debian/Ubuntu) |
| Website | www.diskraptor.com |
Install the cask directly from a local checkout:
git clone https://github.com/SunMe1977/DiskRaptor.git
cd DiskRaptor
brew install --cask ./homebrew/Casks/diskraptor.rbThe cask installs the .dmg (macOS) or .deb (Linux) from the Releases page. You can also download pre-built installers from the official website: www.diskraptor.com.
To install as brew install diskraptor (no tap, no path), the cask must first be merged into the official homebrew/homebrew-cask repository (macOS only) — submit a PR against Casks/d/diskraptor.rb once the macOS .dmg with a fixed SHA256 is published. Linux has no official cask repo.
- Rust (latest stable) --
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh - Node.js 18+ (for the Tauri CLI)
- Linux: WebKitGTK 4.1 (
sudo apt-get install libwebkit2gtk-4.1-dev libgtk-3-dev)
git clone https://github.com/SunMe1977/DiskRaptor.git
cd DiskRaptor
chmod +x build.sh
./build.shbuild.cmd./build.sh
# Output: dist/DiskRaptor-*.deb# Build the Tauri app
cd src-tauri
cargo build --release
cd ..
# Build the Windows installer (NSIS)
npx tauri build --bundles nsis --ci# Rust unit tests (scanner tree, chunking, file accumulators)
cd src-tauri && cargo test
# JS syntax check
for f in frontend/*.js; do node --check "$f"; done
# Full UI test via CDP (requires the app built with the `test-server` feature)
node tests/test_ui.mjs├── src-tauri/ # Rust scanner + Tauri commands
│ ├── src/
│ │ ├── scanner/ # Tree data structures, directory walker, duplicates
│ │ ├── streaming/ # Tree chunking for UI streaming
│ │ ├── menu.rs # Native menu builder
│ │ ├── smart.rs # S.M.A.R.T. disk health (native APIs)
│ │ ├── trash.rs # Trash listing / restore / empty
│ │ ├── browser.rs # Browser cache / cookie cleanup
│ │ └── main.rs # Tauri command layer
│ └── Cargo.toml
├── frontend/ # JS UI rendered in the system WebView
│ ├── app.js # Main app logic
│ ├── app-modules/ # Scan, drives, settings, tools, export
│ ├── galaxyview/ # 3D galaxy visualization
│ ├── format.js # Shared human-readable size formatting
│ └── index.html
├── installer/ # Packaging scripts
│ ├── nsis/ # Windows NSIS installer
│ ├── build.sh # macOS/Linux build + packaging
│ └── build.cmd # Windows build + packaging
├── homebrew/ # Homebrew cask (macOS + Linux)
│ └── Casks/diskraptor.rb
├── test_*.mjs # UI integration tests (CDP)
└── .github/workflows/ # CI pipelines
What is DiskRaptor? A free, open-source disk space analyzer that shows which folders and files consume your storage — with treemap, pie/bar charts and a 3D galaxy view.
Is DiskRaptor really free? Yes — MIT licensed. No ads, no premium tiers, no data collection.
Which platforms are supported? Windows (NSIS installer + Microsoft Store), macOS (DMG + Mac App Store, Intel + Apple Silicon) and Linux (DEB).
Does DiskRaptor upload my data? No. Scanning is 100% local — no telemetry, no cloud, no tracking.
How is it different from WinDirStat / WizTree? It's cross-platform, open source, handles 10M+ files smoothly, and adds duplicate finding, trash recovery, S.M.A.R.T. monitoring and a 3D view. See the comparison table above.
MIT License -- see LICENSE for details.