Which fits your needs?
Space Radar: Developers exploring alternative visualizations and an inspectable codebase.
SpacePeek: Finder users who want to inspect archives before extracting or deleting them.
Features, pricing, and workflow
Scroll across to compare
| Feature | Space Radar | SpacePeek |
|---|---|---|
| Best fit | Developers exploring alternative visualizations and an inspectable codebase. | Finder users who want to inspect archives before extracting or deleting them. |
| Visualization | Sunburst, treemap, and flamegraph | Finder Quick Look folder/archive browser and size overview |
| Platforms and requirements | macOS, Windows, Linux (check current packages) | macOS 14+ |
| Pricing and editions | Free under the MIT license; check repository build/release instructions. | Free previews; optional $3.99 one-time Pro purchase in the US App Store. |
| Open source | Yes | No |
| Native macOS UI | Cross-platform interface | Yes |
| Cleanup workflow | The project documents context-menu actions to locate, open, and delete files or directories; confirm recovery behavior in the selected build. | Inspection and copying; use Finder or a separate cleanup tool for removals. |
| Reports and portability | Consult the exact build’s save/export controls. Keep any generated data and images; NullDisk does not document importing Space Radar sessions. | SpacePeek previews existing folders and archives. Keep original archives and important paths; moving to NullDisk does not transfer Quick Look extension features. |
Space Radar: what stands out
A good fit for developers exploring alternative visualizations and an inspectable codebase.
Space Radar: strengths
- Sunburst, treemap, and flamegraph visualizations
- MIT-licensed source for inspection and modification
- Disk and memory visualization in one project
Considerations
- Packaging and dependencies vary across repository versions
- Check the current release for your OS and CPU
- Do not infer cleanup or report formats from the chart selection
SpacePeek: what stands out
A good fit for Finder users who want to inspect archives before extracting or deleting them.
SpacePeek: strengths
- Preview and search folders plus ZIP, 7z, and RAR archives
- Folder-size overview without background indexing
- Pro adds deeper navigation and copying archive members
Considerations
- An inspection companion rather than a full-drive cleanup utility
- Free browsing stops after the first child level
- Pro archive copying is limited to 100 MiB per file
For a useful comparison on your own drive, match the scan root, access permissions, and size mode. Chart style changes how you explore the results; it does not by itself establish measurement accuracy.
Common questions
When should I choose Space Radar?
A good fit for developers exploring alternative visualizations and an inspectable codebase. Free under the MIT license; check repository build/release instructions.
When should I choose SpacePeek?
A good fit for Finder users who want to inspect archives before extracting or deleting them. Free previews; optional $3.99 one-time Pro purchase in the US App Store.
Will both apps show the same size?
Not necessarily. Match the scan root, permissions, exclusions, and logical/allocated-size mode. Hard links, APFS clones, snapshots, sparse files, and cloud placeholders can change totals. A reported size is not a guaranteed amount recovered after deletion.