DaisyDisk vs OmniDiskSweeper vs Crumb: Best Mac Disk Visualizer 2026

You've run out of disk space, opened Finder, and realized you have no idea where your 512 GB SSD went. The classic next step is to grab a disk visualizer — and the two names that come up most often are DaisyDisk and OmniDiskSweeper. But before you commit to either, it's worth understanding exactly what each tool does (and doesn't do), how their interfaces differ, and whether you'll need a separate app just to clean up what you found. This guide gives you a direct daisydisk vs omnidisksweeper comparison, plus a look at Crumb as a modern alternative that combines visualization and cleaning in one place.

What Each Tool Actually Does

DaisyDisk

DaisyDisk is a paid Mac app ($9.99 on the Mac App Store) that scans your volumes and renders the result as an interactive sunburst chart — concentric rings where each arc represents a folder, sized by how much space it occupies. Clicking any arc drills into that directory. You can drag items to a collection panel at the bottom and delete them all at once.

It handles both user-accessible folders and, when you grant admin access, system directories. It also scans Time Machine snapshots and APFS volumes separately, which is useful if System Data looks unexpectedly large in About This Mac.

OmniDiskSweeper

OmniDiskSweeper is free, made by the Omni Group, and takes a completely different visual approach: a cascading column list, similar to Finder's column view. Each column shows files and folders sorted by size (largest first). You navigate by clicking into folders, and you delete by selecting an item and pressing Move to Trash.

It's fast and lightweight. There's no visualization beyond the sorted list — no chart, no treemap — but for people who think in file paths rather than shapes, that directness is an advantage. The downside is that OmniDiskSweeper hasn't received a significant update in years and requires full disk access to scan protected system folders.

Crumb

Crumb is a native macOS menu-bar app that takes a third approach: a treemap (a grid of nested rectangles) where the size of each rectangle is proportional to disk usage. Unlike the other two, Crumb also runs one-click cleaning of caches, logs, temp files, and APFS purgeable space, and includes a full app uninstaller that removes leftover preference files and support directories — all from inside the same app.

Interface Comparison: Sunburst vs. List vs. Treemap

Scan Speed and Large SSDs

All three tools are ultimately bound by how fast macOS can enumerate directory metadata — this is a filesystem operation, not a raw read, so actual drive throughput matters less than you'd think. On a modern Apple Silicon Mac with a fast NVMe SSD, all three complete a full-volume scan in roughly 30–90 seconds depending on the number of files (not just total size).

DaisyDisk renders progressively as it scans, so you see the sunburst filling in. OmniDiskSweeper shows each top-level folder's size updating in real time. Crumb builds its treemap once the scan finishes. None of them cache results across reboots, so every launch starts a fresh scan.

For systems with millions of small files — developers with large node_modules trees or photographers with enormous RAW libraries — all three tools slow noticeably. OmniDiskSweeper's column view can feel faster in these cases because it's not computing a geometric layout.

The Critical Question: Can You Actually Clean From Inside the Analyzer?

This is where the three tools diverge most sharply in practice.

OmniDiskSweeper sends items to the Trash. You still have to empty the Trash to actually free space, and you have to navigate manually to each folder you want to delete. There's no batch selection of a category like "all cache folders."

DaisyDisk lets you collect multiple items and delete them in one action, which is more efficient. But you're still manually picking each folder. DaisyDisk won't, for example, automatically find and offer to remove all application caches in ~/Library/Caches or clean up /private/var/folders. You navigate there yourself and decide.

Crumb is the only one of the three designed to clean without manual navigation. Its Clean tab targets well-known safe locations directly:

• ~/Library/Caches — per-app cache files
• ~/Library/Logs — application log files
• /Library/Caches — system-level caches
• /private/var/folders — temporary system files
• APFS purgeable space (what macOS calls "System Data" in storage settings)

If you're not sure whether a specific folder is safe to remove, Crumb's built-in "Is this safe to delete?" feature explains what the folder is and what the consequences of removing it are — useful when you're staring at something like com.apple.dt.Xcode in your caches folder and aren't sure if deleting it will break anything.

Uninstalling Apps and Removing Leftovers

Neither DaisyDisk nor OmniDiskSweeper does anything with app uninstallation. If you drag an app to the Trash from Finder, or even from within one of these tools, the support files stay behind in locations like:

• ~/Library/Application Support/AppName/
• ~/Library/Preferences/com.developer.AppName.plist
• ~/Library/Containers/com.developer.AppName/

Over years of installing and uninstalling software, these orphaned directories can accumulate several gigabytes. You can find them manually with Finder's Go menu (Go > Go to Folder, then ~/Library/Application Support), but correlating them to apps you've already deleted is tedious.

Crumb's Uninstall tab handles this: select an app, see all the associated leftover files it found, check or uncheck what you want removed, and confirm. Removals through Crumb are recoverable from Trash, which matters — permanent deletion of the wrong support folder can break app preferences or licensing.

What Is Actually Safe to Delete?

Regardless of which tool you use, the same rules apply to macOS disk cleanup:

• Safe: Contents of ~/Library/Caches — apps rebuild these automatically. Deleting them may slow app launch once.
• Safe: Contents of ~/Library/Logs — log files from apps you've already diagnosed.
• Safe: /private/tmp and APFS purgeable data — macOS manages these itself anyway.
• Use caution: ~/Library/Application Support — contains real user data for some apps (e.g., local databases, saved game data). Don't bulk-delete this folder.
• Do not delete: ~/Library/Keychains, ~/Library/Mail, ~/Library/Messages, or any folder inside /System — these hold real data or are protected by System Integrity Protection (SIP).

If you want to manually inspect and clean caches without any third-party app, you can do it from Terminal:

# List what's in your user cache folder and its sizes
du -sh ~/Library/Caches/*

# Remove a specific app's cache (replace BundleID with the actual folder name)
rm -rf ~/Library/Caches/com.example.AppName

Be precise with rm -rf — it bypasses the Trash and is permanent. A disk visualizer app that sends items to Trash first (like OmniDiskSweeper and DaisyDisk) gives you a recovery window; Terminal does not.

Which Tool Should You Use?

The right answer depends on what you're trying to accomplish:

• You want a beautiful visual breakdown of where your space went, and you're comfortable manually deciding what to delete: DaisyDisk's sunburst is excellent for this. It's polished, actively maintained, and the collection-delete workflow is efficient.
• You want free, fast, and no-frills — just sorted folders: OmniDiskSweeper does the job. It's not pretty, but the column view is quick to navigate and the price is right.
• You want to visualize and then actually clean — caches, logs, app leftovers — without switching tools: download Crumb and run it from the menu bar. The treemap shows you where space went; the Clean and Uninstall tabs handle the removal without you having to navigate folder by folder.

Conclusion

DaisyDisk and OmniDiskSweeper are both solid answers to "what's eating my disk?" — they just disagree on how to present that answer. DaisyDisk's sunburst is visually intuitive; OmniDiskSweeper's sorted list is fast and direct. What neither one does is move from diagnosis to treatment in the same workflow. If you find yourself opening a disk visualizer and then manually hunting through ~/Library to actually free space, that's the gap that tools like Crumb are built to close.