Choose by workflow
A Finder Quick Look extension for browsing folders and archives. If you need something different, compare these five options by the job they do. Choose by platform, features, and how you prefer to review files.
Mac users managing local/remote storage, and developers who need Git-aware cleanup or scriptable disk reports.
Mac users who prefer a free size-sorted browser to a chart.
Mac users seeking an analyzer plus duplicate and photo cleanup tools.
Mac users who want a focused list workflow and explicit confirmation.
Mac users who want explained cleanup categories and developer-cache coverage.
Scroll across to compare
| Feature | SpacePeek | NullDisk |
|---|---|---|
| Best fit | Finder users who want to inspect archives before extracting or deleting them. | Mac users managing local/remote storage, and developers who need Git-aware cleanup or scriptable disk reports. |
| Visualization | Finder Quick Look folder/archive browser and size overview | Radial map, treemap, and file list; CLI terminal treemap |
| Platforms and requirements | macOS 14+ | Mac app: macOS 14+; CLI: macOS, Linux, Windows |
| Pricing and editions | Free previews; optional $3.99 one-time Pro purchase in the US App Store. | Direct Mac edition free with reminders; optional $9.99 one-time personal license or team seat removes reminders. App Store terms are separate. |
| Open source | No | No |
| Native macOS UI | Yes | Yes |
| Cleanup workflow | Inspection and copying; use Finder or a separate cleanup tool for removals. | Review source and action: local Trash, explicit permanent removal, or backup/delete; remote and cloud actions depend on the destination. |
| Reports and portability | SpacePeek previews existing folders and archives. Keep original archives and important paths; moving to NullDisk does not transfer Quick Look extension features. | CLI produces JSON/NDJSON scan reports. Third-party scan files are not directly imported into the Mac GUI. |
SpacePeek previews existing folders and archives. Keep original archives and important paths; moving to NullDisk does not transfer Quick Look extension features.
Finder users who want to inspect archives before extracting or deleting them. Keep it if that matches your needs. Consider a change for a specific requirement such as a different chart, remote sources, report exports, or development cleanup.
GrandPerspective and SquirrelDisk offer free open-source analysis. OmniDiskSweeper is free on Mac. All direct Mac features in NullDisk are free with reminders; reminder removal is optional. Freeware does not necessarily mean open source.
No. Keep any historical exports you need and run a fresh scan of the same location. NullDisk does not import these apps’ saved scans or cleanup queues.