NullDisk our pick
A native macOS disk-space analyzer with an interactive radial map. Native SwiftUI, allocated-size honesty, staged Trash-based removal, zero data collection.
Top 5 OmniDiskSweeper alternatives
WhatSize
A fast measuring sorter with column views and cleanup tools.
Disk Xray
All-in-one analyzer, duplicate finder, uninstaller, and shredder.
SimplyDiskSweeper
A minimal sorted-list cleaner for quick disk sweeps.
SpacePeek
A read-only Quick Look inspector for folders and archives.
Directe vergelijking: NullDisk vs OmniDiskSweeper
| NullDisk | OmniDiskSweeper | |
|---|---|---|
| Visualization | Sunburst radial map | List |
| Platform | macOS 14+ | macOS |
| Pricing | Paid | Free |
| Open source | No (offline, zero-data) | No |
| Cleanup flow | Staged collector → Trash | Direct deletion from lists |
Kernfeiten: OmniDiskSweeper
| OmniDiskSweeper | |
|---|---|
| Vendor | The Omni Group |
| Platform | macOS |
| Pricing | Free — Free freeware from The Omni Group |
| Visualization | List |
| Open source | No |
Stand september 2026 · Prijzen veranderen — controleer bij de aanbieder. Prijs bij publicatie: Free freeware from The Omni Group.
NullDisk past bij je als …
- A radial sunburst map instead of lists or treemaps — see usage at a glance and drill in with a click.
- Fully offline with a published zero-data policy — nothing ever leaves your Mac.
- A staged removal collector: queue suspects, review, then Trash everything together.
Pros & cons
＋ Sterke punten
- Completely free from a trusted Mac developer
- Largest-first sorting finds big folders with zero learning curve
- Lightweight and fast on any Mac
－ Zwaktes
- No visual map at all — pure ranked lists
- Dated interface that hasn't meaningfully evolved in years
- No collector, previews, or safety rails beyond the Trash
Veelgestelde vragen
What is the best alternative to OmniDiskSweeper for Mac?
For most Mac users it's NullDisk: native SwiftUI, a radial sunburst map, a staged removal collector, and zero data collection. OmniDiskSweeper users who want list views and free pricing will feel at home within minutes.
Is there a free alternative to OmniDiskSweeper?
Yes — GrandPerspective and Disk Inventory X are free and open source with genuine treemap analysis. They lack NullDisk's collector workflow and sunburst map, but they find the biggest hogs fast.
How do I switch from OmniDiskSweeper to NullDisk?
Note the largest folders OmniDiskSweeper flagged, then run the same scan in NullDisk and rebuild the cleanup in its removal collector. The full walkthrough is on our switching guide.
Kortom
OmniDiskSweeper is a fine free tool for list fans on macOS. But if you want the whole job — see, stage, and safely remove — done natively on a modern Mac, NullDisk is the upgrade. Overstapgids →