Disk usage analyzer privacy ratings

Tools that scan drives and show which files and folders use the most space. A scan lists every file name on the computer.

22 disk usage analyzers are rated against 6 public criteria, and 22 have enough evidence for a letter grade. Of the 6 with a known jurisdiction, 3 are based in a Five Eyes country, and 5 in the wider Fourteen Eyes.

Open-source disk usage analyzers only · Criteria for this category · Suggest an addition · Markdown

Disk usage analyzers privacy ratings, sorted by pick and then by grade
Name	Grade	Score	Data	Jurisdiction	Open source	No trackers or telemetry	No ads or data sales	Independent audit	Works offline	No account needed
Disk Inventory X Disk usage utility for macOS that shows files and folders as a treemap, with a layout algorithm based on KDirStat.	Grade B	85	100%	–	Yes	Yes	Yes	No	Yes	Yes
Disk Usage Analyzer GNOME's disk usage app, also known as Baobab. It scans folders, drives and remote locations and shows sizes as a tree with a ring or treemap chart.	Grade B	85	100%	United States Five Eyes	Yes	Yes	Yes	No	Yes	Yes
diskonaut Terminal disk space navigator written in Rust that shows a folder as an interactive treemap and can delete files while tracking the space freed.	Grade B	85	100%	–	Yes	Yes	Yes	No	Yes	Yes
DiskUsage Android app that shows internal and external storage as a zoomable map of folders sized by the space they use.	Grade B	85	100%	–	Yes	Yes	Yes	No	Yes	Yes
dua Parallel disk usage analyzer for the terminal written in Rust, with an interactive mode for browsing folders and deleting files.	Grade B	85	100%	–	Yes	Yes	Yes	No	Yes	Yes
Duc Tools for indexing disk usage into a database and browsing it from the command line, an ncurses interface, a graphical viewer or a CGI web page. Built for large file systems.	Grade B	85	100%	–	Yes	Yes	Yes	No	Yes	Yes
dust Command-line tool written in Rust that works like du but draws a tree of the largest folders with bars showing each one's share of the space.	Grade B	85	100%	–	Yes	Yes	Yes	No	Yes	Yes
erdtree Cross-platform file tree and disk usage tool written in Rust, invoked as erd. It respects .gitignore rules and reports size by bytes, blocks, words or lines.	Grade B	85	100%	–	Yes	Yes	Yes	No	Yes	Yes
Filelight KDE's disk usage app. It shows folders as concentric rings, scans local, removable and remote disks, and integrates with the Dolphin file manager.	Grade B	85	100%	Germany Fourteen Eyes	Yes	Yes	Yes	No	Yes	Yes
gdu Fast disk usage analyzer for the terminal written in Go, built for parallel scanning of SSDs, with an interactive interface, exports and an optional local web interface.	Grade B	85	100%	–	Yes	Yes	Yes	No	Yes	Yes
GrandPerspective Disk usage app for macOS that draws files as a treemap of rectangles sized by file size. Free from SourceForge, or as a paid build of the same app in the Mac App Store.	Grade B	85	100%	–	Yes	Yes	Yes	No	Yes	Yes
K4DirStat KDE port of the original KDirStat disk usage analyzer for Linux, with a folder tree, a treemap and cleanup actions.	Grade B	85	100%	–	Yes	Yes	Yes	No	Yes	Yes
ncdu Disk usage analyzer with a text-mode interface, built to find large files on servers over SSH. Version 2 is written in Zig and version 1 in C.	Grade B	85	100%	–	Yes	Yes	Yes	No	Yes	Yes
QDirStat Qt-based disk usage analyzer for Linux, BSD and macOS by the author of the original KDirStat. It shows a folder tree and treemap, with cleanup actions and views by file type, age and installed package.	Grade B	85	100%	–	Yes	Yes	Yes	No	Yes	Yes
WinDirStat Disk usage analyzer for Windows that shows a sortable folder tree, file type statistics and a treemap, with duplicate file search and cleanup actions.	Grade B	85	100%	–	Yes	Yes	Yes	No	Yes	Yes
SquirrelDisk Disk usage analyzer for macOS, Windows and Linux written in Rust, with a sunburst or treemap view, cleanup tools and optional scanning of servers over SSH and cloud storage through rclone. The free app shows a sponsor banner.	Grade F	38	100%	–	Yes	No	No	No	Partial	Yes
OmniDiskSweeper Free disk space utility for macOS from The Omni Group. It lists files and folders sorted by size in a column browser and moves selected items to the Trash.	Grade F	35	85%	United States Five Eyes	No	Partial	Yes	No	Unknown	Yes
WizTree Fast disk space analyzer for Windows and macOS from Antibody Software. On NTFS drives it reads the Master File Table directly. Free for personal use, with paid supporter and enterprise licenses.	Grade F	31	100%	New Zealand Five Eyes	No	No	Yes	No	Partial	Yes
JDiskReport Freeware disk usage analyzer from JGoodies that runs on Java and shows folder sizes, file types and file ages as charts and tables.	Grade F	23	62%	–	No	Unknown	Yes	No	Unknown	Yes
SpaceSniffer Portable freeware disk space analyzer for Windows that shows folders and files as a zoomable treemap, with filters by type, size, date and tags.	Grade F	23	62%	–	No	Unknown	Yes	No	Unknown	Yes
TreeSize Free Free edition of JAM Software's disk space manager for Windows. It shows folder sizes in an Explorer-like tree with charts. Paid Personal and Professional editions add search, reports and cleanup tools.	Grade F	23	100%	Germany Fourteen Eyes	No	No	Partial	No	Partial	Yes
DaisyDisk Paid disk space analyzer for macOS from Software Ambience Corp. It shows disks as an interactive sunburst chart, can scan Google Drive, Dropbox, OneDrive and Box, and collects files for deletion.	Grade F	15	100%	Ukraine Outside Eyes	No	No	Partial	No	Partial	No

Questions

What is the most private option among disk usage analyzers?

No pick has been made yet. The table above is sorted by score, based on public evidence.

How are disk usage analyzers rated?

Each entry answers 6 questions: open source, no trackers or telemetry, no ads or data sales, independent audit, works offline and no account needed. Answers need links to evidence. See the full criteria.

Does jurisdiction matter?

Jurisdiction decides which laws can compel a provider to hand over data. Each entry shows its country and whether it is in the Five, Nine or Fourteen Eyes. The data a provider can hand over depends mostly on what it stores and who holds the keys. Read about jurisdictions and the CLOUD Act.