DiskMap

A visual disk space analyzer with native UI on Linux (GTK4 + libadwaita) and macOS (SwiftUI).

Scan any directory and see where your space is going as an interactive donut pie chart. Drill into subdirectories, identify large files, and clean up with a right-click.

Features

• Pie chart visualization with heat-map coloring (red = largest, blue = smallest)
• Single-level scan — scans one directory at a time for instant results
• Drill-down navigation — double-click a directory to scan into it, mouse back button or toolbar to go back
• Right-click context menu — Open in File Manager, Copy Path, Move to Trash
• Virtual filesystem filtering — automatically skips /proc, /sys, /dev, /run
• Per-directory size timeout — large directories won't hang the UI
• Directory tree sidebar — quick-access to common locations (Home, /, Documents, etc.)
• Sqrt-scaled slices — small items are always visible, not hidden by one large file

Screenshots

Welcome Screen

Disk Scan

Building

Linux (GTK4)

Requires GTK4 and libadwaita development libraries:

# Debian/Ubuntu
sudo apt install libgtk-4-dev libadwaita-1-dev

# Fedora
sudo dnf install gtk4-devel libadwaita-devel

# Arch
sudo pacman -S gtk4 libadwaita

Build and run:

cd diskmap
cargo run -p dm-gtk

Release build:

cargo build --release -p dm-gtk
./target/release/diskmap

macOS (SwiftUI)

Requires Rust and Xcode.

cd diskmap

# Build the universal Rust library (arm64 + x86_64)
bash scripts/build-rust-universal.sh

# Open in Xcode and build, or use xcodebuild

Installing

Debian/Ubuntu (.deb)

Download the .deb from Releases or build it:

cargo install cargo-deb
cargo deb -p dm-gtk
sudo dpkg -i target/debian/diskmap_*.deb

Flatpak

Download the .flatpak from Releases or build it:

cd packaging
flatpak-builder --force-clean --repo=repo builddir com.finndevs.diskmap.yml
flatpak build-bundle repo diskmap.flatpak com.finndevs.diskmap
flatpak install diskmap.flatpak

Binary

Download the diskmap binary from Releases, make it executable, and run. Requires GTK4 and libadwaita installed on your system.

Architecture

diskmap/
  crates/
    dm-core/     # Data model, treemap algorithm, color mapping, analysis
    dm-scan/     # Single-level filesystem scanner with dir size computation
    dm-ffi/      # C-ABI static library for Swift (cbindgen)
    dm-gtk/      # GTK4 + libadwaita Linux app
  macos/
    Sources/     # SwiftUI macOS app
    RustCore/    # Swift package wrapping the C FFI library
  packaging/     # .desktop, icon, AppStream metadata, Flatpak manifest

The Rust core (dm-core, dm-scan) is shared between platforms. The GTK app uses the crates directly. The macOS app calls into Rust via a C FFI layer (dm-ffi).

License

Copyright (c) 2026 Finn Devs LLC. All rights reserved.

This software is proprietary. No permission is granted to copy, modify, distribute, or use commercially without explicit written consent from Finn Devs LLC.

Flathub (flathub.org) and its infrastructure partners are granted permission to build, host, and distribute the compiled application through the Flathub repository.

For licensing inquiries visit finndevs.com.