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.
GNOME Project
Switching from Baobab (Disk Usage Analyzer)? GNOME's simple ring-chart scanner for Linux boxes. Here are five tools worth your Applications folder — honestly compared, with our native pick first.
A native macOS disk-space analyzer with an interactive radial map. Native SwiftUI, allocated-size honesty, staged Trash-based removal, zero data collection.
A light-speed sunburst that turns your filesystem into light.
Privacy-focused free cleanup with offline visualization.
A treemap visualizer with collector tray and smart filters.
The easiest open-source sunburst for hunting huge files.
| NullDisk | Baobab (Disk Usage Analyzer) | |
|---|---|---|
| Visualization | Sunburst radial map | Rings |
| Platform | macOS 14+ | Linux |
| Pricing | Paid | Open source |
| Open source | No (offline, zero-data) | Yes |
| Cleanup flow | Staged collector → Trash | Varies by tool |
| Baobab (Disk Usage Analyzer) | |
|---|---|
| Vendor | GNOME Project |
| Platform | Linux |
| Pricing | Open source — Free and open source (GPL-2.0+) with GNOME |
| Visualization | Rings |
| Open source | Yes |
Oppdatert september 2026 · Priser endres — verifiser hos leverandøren. Pris ved skrivetidspunkt: Free and open source (GPL-2.0+) with GNOME.
For most Mac users it's NullDisk: native SwiftUI, a radial sunburst map, a staged removal collector, and zero data collection. Baobab (Disk Usage Analyzer) users who want rings views and open source pricing will feel at home within minutes.
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.
Note the largest folders Baobab (Disk Usage Analyzer) flagged, then run the same scan in NullDisk and rebuild the cleanup in its removal collector. The full walkthrough is on our switching guide.
Baobab (Disk Usage Analyzer) is a fine free tool for rings fans on Linux. But if you want the whole job — see, stage, and safely remove — done natively on a modern Mac, NullDisk is the upgrade. Bytteguide →