Disk Usage eXtended

See where your space goes.

Download free On the Mac App Store, for macOS 15 or later

The dux Overview: 188.4 GB available, a capacity bar and the top cleanup suggestions

Other tools show what is big. dux shows what you can really free.

4.2 GB The size Finder shows for 3 copies of a video

120 MB What moving them to the Trash actually frees, once the Trash is emptied

The copies are APFS clones that share storage. dux measures space on disk, not file size, and never rounds in its own favor. When the two differ, it says so and shows why.

Every folder, drawn to scale.

A sunburst for drilling down, a treemap for spotting the big files, and a list for precision. Clones, hard links and packages are explained, not just measured.

More about Explore

Ranked by the space you get back.

Every suggestion has a plain reason, a safety level and the space it truly frees. Safe ones can be preselected. Review and risky ones never are.

More about Impact

Impact: suggestions ranked by reclaimable space

Keep every path. Free the space.

Find copies by content and resolve them one group at a time. Replace the extras with APFS clones, and every file still opens where you expect it. Part of Pro

More about Duplicates

Two Google Drives, finally told apart.

What each cloud account keeps on this Mac, what is online only, and what an old, disconnected folder still holds.

More about Cloud

Cloud: account cards with local and online sizes

Nothing moves until you say so.

Files go to the Trash, become clones, or stay safe in the cloud. A cleanup can be undone from Activity, and the few actions that can't be undone say so before they run.

Scan
Useful within seconds, complete in about a minute.
Review
A dry run that lists exactly what each action does.
Clean, or undo
Freed now and moved to the Trash, counted separately.

du, extended.

You know du -sh. dux knows which of those gigabytes are caches that rebuild, which are clones, and which you need. Every command it runs is shown to you first.

dux for developers

~ % du -sh ~/Library/Developer
 86G    /Users/you/Library/Developer

~ % dux suggest ~/Library/Developer --top 3
3 suggestions, up to 54.4 GB reclaimable
   Size  Safety  Rule                  Title
38.2 GB  safe    xcode.derived-data    Xcode build files
 9.4 GB  safe    xcode.device-support  Xcode device support files
 6.8 GB  review  xcode.archives        Old Xcode archives