WizTree for Mac: WizTreeMac and a free alternative

The short answer

For years WizTree was Windows only, and Mac users had to look elsewhere. That changed on 16 September 2026, when its developer released WizTreeMac 1.00 for macOS 12 or later. So if you want WizTree itself on a Mac, you can now get it from diskanalyzer.com.

There are still good reasons to look at alternatives. WizTreeMac is a first release. The trick that makes WizTree famous on Windows, reading the NTFS Master File Table, does not exist on a Mac. And WizTree needs a paid license for business use.

SquirrelDisk is a free, open source alternative. It runs on macOS, Windows and Linux, shows your disk as an animated sunburst or a treemap, and lets you collect files before you delete them. Other Mac options are listed further down.

WizTree vs SquirrelDisk

Checked on 28 September 2026 on diskanalyzer.com.

Other Mac options

• SquirrelDisk: free, open source, sunburst and treemap, runs on all three desktop systems.
• GrandPerspective: free and open source (GPL), with a treemap view. Free from SourceForge, or $2.99 on the App Store.
• DaisyDisk: a polished sunburst app, $9.99 one-time. See our DaisyDisk comparison.
• Terminal: du -sh ~/* | sort -h lists folder sizes with no install. ncdu (via Homebrew) gives an interactive view in the terminal.

How SquirrelDisk works

Pick a drive or a folder. The sunburst starts drawing at once and grows while the scan runs. Each ring is one folder level deeper. If you like WizTree's rectangles, turn on the treemap in Settings.

Click a slice to zoom in and click the centre to go back. The side list shows the biggest items first. Tiny files are grouped so the chart stays readable.

To clean up, drag slices or list rows into the collector. Nothing happens until you choose: move to Trash, delete for good, back up to a folder or external drive first, or back up to cloud storage with rclone and then delete. An optional secure erase (3 passes, DoD 5220.22-M) is there too. On SSDs and APFS old blocks may survive, so full-disk encryption is what really protects your data.

Some things SquirrelDisk does to keep numbers honest and deletes safe:

• It shows real space on disk.
• Cloud-only files from iCloud, Dropbox, Google Drive or OneDrive count as zero.
• Hard links are counted once.
• The chart updates live when files change in Finder or Explorer.
• System folders, your home folder and whole drives can't be collected. App and settings folders ask for extra confirmation.

It can also scan a server over SSH using your ssh config, and cloud storage through rclone, which it can install with one click. It is a native Rust app with no Electron or web view, in 25 languages and 7 colour themes.

When WizTree is the better choice

WizTree is a great tool, and in some cases it is the right pick:

• Large NTFS drives on Windows. Reading the Master File Table directly makes WizTree's Windows scans very quick. SquirrelDisk does not read the MFT, and we don't claim to match that speed.
• You already use WizTree on Windows. WizTreeMac gives you the same layout and habits on a Mac, and an existing supporter code works on both.
• You want its extras. WizTree has a long track record, a portable version on Windows and command-line options on both systems.

SquirrelDisk also has no duplicate finder and no automatic cache cleanup.

How to get started

1. Get the macOS build from the download page. It runs on Apple silicon and Intel.
2. On first launch macOS blocks unsigned apps. Go to System Settings → Privacy & Security and click Open Anyway.
3. Choose a drive or folder. Switch to the treemap in Settings if you prefer the WizTree look.
4. Drag what you don't need into the collector and choose Trash, delete, or back up first.