diskonaut review
A free, open-source treemap navigator for focused local disk cleanup.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
diskonaut is a free, open-source terminal utility for exploring local disk usage on Linux, macOS, and Windows. It recursively scans a supplied filesystem path, indexes filesystem metadata in memory, and presents folder contents as a proportional treemap. Users can navigate through subfolders, explore results while scanning continues, delete files or folders, and track the space freed during the current session. It is aimed at people who want a focused way to inspect and clean local storage without a paid plan or a broader desktop management suite.
Its standout feature is the live treemap workflow. Disk usage is represented visually, making large folders easier to locate within a selected path, while navigation through subfolders supports more focused inspection. The tool can also show apparent file size instead of on-disk block usage, which gives users two ways to interpret storage consumption. Because scanning, indexing, navigation, deletion, and freed-space tracking are combined in one terminal workflow, diskonaut suits technically comfortable users who prefer direct filesystem exploration.
The product stays intentionally narrow. Its documented capabilities center on filesystem scanning and treemap navigation, with installation available through binaries, Cargo, and several operating-system package systems. It does not include AI features, verified integrations, application-size reporting, file-type grouping, external-drive-specific scanning, or report export. Choose diskonaut for free, cross-platform cleanup focused on folders and files; choose another tool if you need reporting, integrations, wider classification features, or a graphical interface.
diskonaut pros and cons
- Where it wins
- Free and open source on Linux, macOS, and Windows
- Explores filesystem treemaps while recursive scans continue
- Deletes files or folders and tracks space freed per session
- Where it doesn't
- Terminal interface may not suit users seeking a graphical app
- No verified integrations or report-export workflow
- Focused on local scanning rather than broader classification features
diskonaut fact sheet, pricing and score →
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