RaDisk
RaDisk: A free, open-source filesystem analyzer for comparing scans across Windows, macOS, and Linux. Ranked #46 of 104 in Disk Space Analyzers by our editors (4.2/10); pricing: Free plan; best for free users wanting cross-platform scan snapshots.
At a glance
- Editor score4.2 / 10
- PricingFree plan
- Best forFree users wanting cross-platform scan snapshots
- Free planYes
- Paid fromFree
- Desktop platformswindows, macos, linux
- Facts checked23 Sep 2026
Where it wins
- Shows usage in radial, indented-tree, and largest-files views
- Exports and imports snapshots, with folder-level comparisons
- Scans directories in parallel and supports mount selection
Where it doesn't
- Terminal interface may not suit users seeking a graphical desktop app
- Support is listed through documentation
- Deletion depends on available system-trash commands
Our verdict on RaDisk
RaDisk is a terminal-based disk-usage analyzer for people who want to inspect local files and folders across Windows, macOS, and Linux. Its radial sunburst, indented tree, and largest-files views offer different ways to locate storage use, while keyboard and mouse navigation make the results interactive. The open-source software is aimed at solo users and small teams who prefer a free tool and are comfortable working in a terminal.
For scan work, RaDisk combines parallel directory scanning with streamed progress, configurable exclusions, and mount selection before scanning. Users can export and import snapshots, compare snapshots, and inspect folder-level differences, making it useful for revisiting storage changes rather than only viewing a single scan. Deletion is available through system-trash commands when those commands are available. That approach keeps cleanup tied to the operating system’s trash facilities, but it is not a standalone deletion workflow independent of them.
The main trade-off is its terminal-first interface: people who want a conventional graphical disk map should look elsewhere. Documentation is the listed support channel, so the product is a better fit for self-directed users than buyers seeking a broader support operation. Choose RaDisk if free, cross-platform scans and snapshot comparison matter more than a graphical interface; choose another analyzer if your workflow depends on graphical exploration or cleanup that does not rely on system-trash commands.
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RaDisk pricing
RaDisk fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Desktop platforms | windows, macos, linux |
| Treemap view | Not verified |
| Application sizes | Not verified |
| File-type breakdown | Not verified |
| External drive scans | Not verified |
| Exportable reports | Yes |
| Scan scope | Files_folders |
| Deployment | Self-hosted, Desktop |
| Platforms | Windows, macOS, Linux |
| Support | Docs |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan |
| Website | github.com |
| Facts checked | 23 Sep 2026 |
Alternatives to RaDisk
- TreeSizeA broad Windows analyzer with strong free features and tiered automation tools.9.3
- WinDirStatA classic Windows analyzer with treemaps, file breakdowns, duplicate detection, and CSV export.9.1
- FilelightA free, open-source disk analyzer with strong KDE integrations and ring-based visuals.9.0
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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