https://github.com/nathannncurtis/canopy

Windows disk size analyzer
https://github.com/nathannncurtis/canopy

cpp csharp disk-analyzer disk-space ntfs treemap windows wpf

Last synced: 6 days ago
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Windows disk size analyzer

• Host: GitHub
• URL: https://github.com/nathannncurtis/canopy
• Owner: nathannncurtis
• License: gpl-3.0
• Created: 2026-06-18T22:13:02.000Z (21 days ago)
• Default Branch: master
• Last Pushed: 2026-06-18T23:21:27.000Z (21 days ago)
• Last Synced: 2026-06-19T00:14:47.919Z (21 days ago)
• Topics: cpp, csharp, disk-analyzer, disk-space, ntfs, treemap, windows, wpf
• Language: C++
• Size: 61.5 KB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE
  • Code of conduct: CODE_OF_CONDUCT.md
  • Security: SECURITY.md

Awesome Lists containing this project

README

          
# canopy

![C++](https://img.shields.io/badge/C%2B%2B-20-blue)

![C#](https://img.shields.io/badge/C%23-.NET%209-purple)

![License](https://img.shields.io/badge/license-GPL%203.0-blue)

![Platform](https://img.shields.io/badge/platform-Windows-lightgrey)

![Version](https://img.shields.io/badge/version-1.0.0-orange)

**A fast Windows disk space analyzer with a native WPF interface.**

---

## Why Canopy?

Most disk analyzers either scan slowly or feel dated. Canopy uses the NTFS Master File Table directly (the same index Windows already maintains) to enumerate every file on a volume in a single pass without opening any files. On large drives this is dramatically faster than walking the directory tree the conventional way.

- MFT enumeration via USN journal (`FSCTL_ENUM_USN_DATA`) for local NTFS volumes

- `NtQueryDirectoryFile` with a thread pool for UNC paths (`\\server\share`)

- AVX2 SIMD size accumulation with runtime CPU dispatch and scalar fallback

- Squarified treemap with drill-down navigation (left-click in, right-click out)

- Directory tree view with proportional size bars

- Fluent Design UI (WPF-UI, Mica backdrop, dark theme)

## Requirements

- Windows 10 or later

- Administrator privileges for MFT scanning (falls back to directory scan without elevation)

## Usage

Download the latest release ZIP, extract it, and run `Canopy.exe`. The DLL (`Canopy.Core.dll`) must stay alongside the EXE.

Enter a local path (`C:\`) or a UNC path (`\\server\share`) and click **Scan**.

## Building from Source

**Prerequisites:** Visual Studio 2022 (C++ workload), CMake 3.25+, .NET 9 SDK.

```bat

build.bat

```

Output lands in `dist\Canopy\`. The build is unsigned.

Or build components separately:

```bat

cmake -S Core -B Core\build -A x64

cmake --build Core\build --config Release

dotnet publish App\SizeMonitor.App.csproj -c Release -r win-x64 --self-contained true -o dist\Canopy

copy Core\build\bin\Release\Canopy.Core.dll dist\Canopy\

```

## License

GPL-3.0. See [LICENSE](LICENSE).