SquirrelDisk

Free plan LinuxMacWindows

What SquirrelDisk is

SquirrelDisk is a free, open-source desktop app for finding large files and folders on Windows, macOS, and Linux. It scans files and folders and maps their disk usage in colourful sunburst and treemap-style charts, with folder zooming and adjustable chart depth. Items can be moved to Trash, permanently deleted, securely erased, or backed up before deletion. External drives are supported, as are machines reachable over SSH and cloud storage through rclone. Listed rclone services include Google Drive, Dropbox, OneDrive, Box, pCloud, S3-compatible storage, Backblaze B2, SFTP, FTP, WebDAV/Nextcloud, and MEGA. System folders, home folders, whole drives, and other essential locations are protected; app and settings folders require extra confirmation. The maker says scans run locally, files and maps are not uploaded, and no account or sign-in is needed. It supports 25 languages and uses the AGPL-3.0 license.

Who it suits

SquirrelDisk suits desktop users who want visual disk-usage analysis and cleanup across local, external, remote, or rclone-connected storage. It is designed for people comfortable with a free open-source utility.

What it does well

Sunburst and treemap disk-usage views
Scans external drives and SSH machines
Supports many rclone cloud storage services
Cleanup includes secure erase and backup options
Local scanning without account or sign-in

What to know first

No file-type breakdown is listed
No exportable reports are listed
Automatic updates are enabled unless disabled in Settings

Plans

Plan	Billed and limits	Price
SquirrelDisk	Free for every desktop · open source under AGPL-3.0	Free

As squirreldisk.com lists them, read 11 Oct 2026. The maker's own page has the final word.

Verdict

SquirrelDisk provides visual storage maps and several cleanup choices across three desktop platforms. Local scanning, protected locations, and remote-storage support make it useful for investigating space usage without an account.

Facts from SquirrelDisk's own pages

Cleanup: Items can be moved to Trash, permanently deleted, securely erased, or backed up before deletion. · squirreldisk.com, 11 Oct 2026
External drive scans: Yes · squirreldisk.com, 23 Sept 2026
Free plan: Yes · squirreldisk.com, 23 Sept 2026
Integrations: The release notes list Google Drive, Dropbox, OneDrive, Box, pCloud, S3-compatible storage, Backblaze B2, SFTP, FTP, WebDAV/Nextcloud, and MEGA account support through rclone. · github.com, 11 Oct 2026
Languages: The app is available in 25 languages and selects the system language by default, with a setting to change it. · squirreldisk.com, 11 Oct 2026
License: The FAQ states SquirrelDisk is free and open source under the AGPL-3.0 license. · squirreldisk.com, 11 Oct 2026
Network requests: The privacy policy says the app checks for updates and downloads a sponsor list at launch, and can send anonymous daily sponsor-view totals when enabled. · squirreldisk.com, 11 Oct 2026
Platforms: Version 2.5.0 is offered for macOS on Apple silicon and Intel, Windows 10 and 11, and Linux x86_64. · squirreldisk.com, 11 Oct 2026
Privacy: The maker says scans run locally and files, filenames, and disk maps are not uploaded; the app has no account or sign-in. · squirreldisk.com, 11 Oct 2026
Purpose: SquirrelDisk maps disk usage as a colourful chart to help find large files and folders and clean them up. · squirreldisk.com, 11 Oct 2026
Remote scans: It can scan machines reachable over SSH and scan cloud storage through rclone. · squirreldisk.com, 11 Oct 2026
Safety: System folders, the home folder, whole drives, and other essential locations are protected from collection; app and settings folders require extra confirmation. · squirreldisk.com, 11 Oct 2026
Scan scope: files_folders · squirreldisk.com, 23 Sept 2026
Support: The maker directs users to Discord or GitHub issues for questions and bug reports. · squirreldisk.com, 11 Oct 2026
Treemap view: No · squirreldisk.com, 23 Sept 2026
Updates: The app updates itself when a new version is available, and automatic updates can be turned off in Settings. · squirreldisk.com, 11 Oct 2026
Views: It offers sunburst and treemap views, with folder zooming and adjustable chart depth. · squirreldisk.com, 11 Oct 2026

Where SquirrelDisk stands on Freedom251

Disk Space Analyzers#59 of 105