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SquirrelDisk
v2SquirrelDisk 2 is here · faster, better looking, free.

See what's using your disk space

SquirrelDisk maps your whole disk as a colourful chart in seconds, so you can find the big stuff and clean it up safely. Free for macOS, Windows and Linux.

Download freeOther platforms

v2.1.3 · macOS · Windows · Linux

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Features

Find the space hogs. Clean up with confidence.

Everything you need to understand a full disk, and nothing you don't.

The whole disk at a glance

Every folder becomes a slice of a colourful sunburst, sized by the space it takes. The chart builds up live while the scan runs, so the big offenders show up in seconds.

  • Live, animated chart while scanning
  • Biggest folders listed first
  • Free space and what you've collected, always in view
The sunburst chart of a whole disk with the biggest folders listed on the right

Explore by clicking

Click a slice to zoom in, click the centre to go back. Hover any slice and the side list shows what's inside, biggest first.

  • Tiny files are grouped so the chart stays readable
  • Open any group to see everything in it
  • Adjustable chart depth
Zoomed into the Movies folder, with its contents listed by size

Collect, then clean up

Drag slices or list rows into the collector at the bottom. When you're ready, choose what happens. A progress view keeps you posted, with a little celebration at the end.

  • Move to the Trash

    Recoverable later

  • Delete for good

    Frees space right away

  • Secure eraseNew

    Overwrites files before removing them

  • Back up, then delete

    To an external drive or the cloud

Safe by design

System folders, your home folder, whole drives and other essential locations are protected. App and settings folders ask for an extra confirmation.

Accurate numbers

Shows the space files really take on disk. Cloud-only files (iCloud, Dropbox, Google Drive, OneDrive) count as zero, and linked folders count once.

Always up to date

Delete something in Finder, Explorer or your file manager and the chart updates on its own.

Servers and cloud storage

Scan any machine you can reach over SSH, or S3, Google Drive, Dropbox, FTP and many more through rclone.

Secure eraseNew

An option for permanent deletion: files are overwritten three times (DoD 5220.22-M) before being removed, so private data is much harder to recover.

Available in 25 languagesNew

From English, 简体中文 and Español to हिन्दी, العربية and Italiano. Picked automatically, changeable in Settings.

English简体中文हिन्दीEspañolFrançaisالعربيةবাংলাPortuguêsРусскийاردوBahasa IndonesiaDeutsch日本語मराठीతెలుగుTürkçeதமிழ்Tiếng Việt한국어ItalianoفارسیPolskiУкраїнськаไทยNederlands

Themes

Make it yours

Seven colour themes, optional sound effects and an adjustable chart depth.

  • Hazelnut
  • Midnight Neon
  • Autumn Forest
  • Dracula
  • Nordic
  • Sunset
  • Paper

Performance

Light on your machine

Written in Rust. It starts instantly and runs smoothly on older computers too.

≈ 8 MB

The whole app. No runtime, no web browser inside.

Seconds

To map millions of files on a modern disk.

Low memory

A small footprint, even for huge scans.

Privacy

Your files stay on your computer

SquirrelDisk never uploads your files or their names. No account, no tracking.

Read the privacy policy

  • Sponsors are picked on your computer

    The app downloads the same list of sponsors for everyone and chooses one locally. Nothing about you or your disk is sent.

  • Anonymous stats, or none

    Optional daily view totals with no ID of any kind. Turn them off, or turn off personalized sponsors, in Settings.

  • No cookies, no analytics

    Not in the app, and not on the sponsor links. Advertisers only ever see totals.

Download

Get SquirrelDisk

Version 2.1.3. Free, for every desktop. It updates itself when a new version comes out.

macOS

Apple silicon and Intel

Download .dmg10.0 MB

Windows

Windows 10 and 11

Installer .msi4.1 MB Portable .exe10.6 MB

Linux

x86_64

Download .tar.gz5.8 MB

First launch on macOS

If macOS says SquirrelDisk “can't be opened” or “is damaged”, it's because the app is distributed outside the App Store. Either:

  1. Open System Settings → Privacy & Security, scroll down and click Open Anyway next to the SquirrelDisk message, then confirm.
  2. Or run this in Terminal, then open SquirrelDisk again:
xattr -dr com.apple.quarantine /Applications/SquirrelDisk.app

On recent macOS versions, right-click → Open is no longer enough.

First launch on Windows

If “Windows protected your PC” appears, click More info, then Run anyway.

For the portable .exe you can also right-click the file → Properties → tick Unblock → OK.

All builds and release notes are on the GitHub releases page.

FAQ

Questions and answers

Is SquirrelDisk really free?
Yes. SquirrelDisk is free and open source under the AGPL-3.0 license. A small sponsor banner inside the app helps keep it that way. It is picked on your computer and never tracks you.
macOS says the app can't be opened or is damaged. What do I do?

If macOS says SquirrelDisk “can't be opened” or “is damaged”, it's because the app is distributed outside the App Store. Either:

  1. Open System Settings → Privacy & Security, scroll down and click Open Anyway next to the SquirrelDisk message, then confirm.
  2. Or run this in Terminal, then open SquirrelDisk again:
xattr -dr com.apple.quarantine /Applications/SquirrelDisk.app

On recent macOS versions, right-click → Open is no longer enough.

Windows says "Windows protected your PC". Is that safe?

If “Windows protected your PC” appears, click More info, then Run anyway.

For the portable .exe you can also right-click the file → Properties → tick Unblock → OK.

Can I delete something important by mistake?
System folders, your home folder, whole drives and other essential locations are protected and can't be collected. App and settings folders ask for an extra confirmation. You also pick how to clean up: move to the Trash, delete for good, secure erase, or back up first.
What does secure erase do?
It's an option for permanent deletion. Each file is overwritten three times (zeros, ones, then random data, following DoD 5220.22-M), renamed and then removed, so it is much harder to recover with undelete tools. On SSDs and copy-on-write file systems (APFS, Btrfs, ZFS) the drive may still keep old blocks for a while; full-disk encryption (FileVault, BitLocker, LUKS) is what really protects data there.
Why does a folder look smaller than in other tools?
SquirrelDisk shows the space files really take on disk. Files that live only in the cloud (iCloud, Dropbox, Google Drive, OneDrive) count as zero, and linked folders are counted once.
Can I scan a server or cloud storage?
Yes. Scan any machine you can reach over SSH. For S3 buckets, Google Drive, Dropbox, FTP and many more cloud services, install rclone and SquirrelDisk can scan them too.
How does it update?
SquirrelDisk checks GitHub for a new version when it starts and updates itself. You can turn this off in Settings. All builds are also on the releases page.
Which languages are available?

25: English, 简体中文, हिन्दी, Español, Français, العربية, বাংলা, Português, Русский, اردو, Bahasa Indonesia, Deutsch, 日本語, मराठी, తెలుగు, Türkçe, தமிழ், Tiếng Việt, 한국어, Italiano, فارسی, Polski, Українська, ไทย, Nederlands.

SquirrelDisk picks your system language automatically; you can change it in Settings.

Something else? Ask on Discord or open an issue.