Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

duvis review

Free#43 of 104 in Disk Space Analyzers

A free, open-source directory scanner for visualizing storage use across Windows, macOS, and Linux.

4.5/10Editor score
Visit duvis
duvis4.5 Visit duvis

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

duvis is an open-source disk usage analyzer for developers, AI agents, and other users who want to understand local storage without deleting files. It scans directories and presents results through a command-line tool, with a local browser interface for visual exploration. Windows, macOS, and Linux support makes it relevant to people working across those operating systems, while the read-only approach suits users who want to inspect storage before deciding what to do themselves.

The range of output is a central strength. In the browser, users can explore a treemap, sunburst, or list view; command-line results can include terminal trees, hierarchical JSON, streaming NDJSON, summaries, and lists of the largest files and directories. Category summaries and filters by category, type, size, name, and modification age help narrow a scan. The product also categorizes entries such as caches, build artifacts, logs, media, version-control data, and IDE metadata, giving technical users several ways to investigate where space is going.

The trade-off is scope: duvis is for understanding usage, not reclaiming space. Its read-only operation avoids making changes during a scan, but users who want an analyzer that also deletes files will need another tool. It is distributed as a command-line tool, so its browser visualizations are part of a local workflow rather than a replacement for the command line. The project is MIT-licensed and free to use; support is through documentation. Choose duvis for cross-platform, visual inspection and flexible output, but look elsewhere if cleanup actions or a standalone graphical-first workflow are essential.

duvis pros and cons

  • Where it wins
    • Offers treemap, sunburst, and list views in a local browser interface
    • Summarizes storage by category and highlights the largest entries
    • Runs on Windows, macOS, and Linux and supports JSON and NDJSON output
  • Where it doesn't
    • Read-only operation means it does not delete files or free space
    • Its command-line distribution may not suit users seeking a standalone graphical app
    • Support is listed through documentation

duvis fact sheet, pricing and score →

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated · How we research and update