rsdirstat review
A focused, free analyzer for quickly finding large directories and files.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
rsdirstat is an open-source disk-usage analyzer for macOS, Linux, and Windows. It scans directories with platform-native APIs and presents the results in an interactive squarified treemap through a local web application. The product is suited to people who want a direct visual way to locate space-consuming files and folders across desktop operating systems, without a paid plan. A separate command-line binary produces top-N reports for directories or files.
Its standout feature is the combination of multithreaded scanning and treemap navigation. Users can zoom through directory hierarchies, color results by file type or modification time, and filter by file extension, size, or name. The cross-filesystem scan option broadens the scan scope, while the ability to reveal items in the system file manager connects visual analysis with file cleanup. This makes rsdirstat particularly useful when the immediate goal is to understand where disk space is concentrated rather than build a wider storage-management workflow.
The product keeps its focus narrow. Its reporting is split between the interactive GUI and command-line top-N output, while integration and export breadth is limited. That tradeoff suits users who value fast local inspection, cross-platform availability, and open-source access. Buyers who need broader integrations or more extensive reporting workflows should choose an alternative with a wider ecosystem. For straightforward directory and file analysis, rsdirstat offers a clear feature set across all three supported desktop platforms.
rsdirstat pros and cons
- Where it wins
- Free and open source on macOS, Linux, and Windows
- Multithreaded scanning uses platform-native APIs
- Treemap navigation supports filters, coloring, and zooming
- Where it doesn't
- Integration and export breadth is limited
- GUI and top-N reporting use separate interfaces
- Its scope centers on directory and file analysis
rsdirstat fact sheet, pricing and score →
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