Freedom251 › Disk Space Analyzers
duvis
by duvis
What duvis is
duvis is a read-only disk usage analyzer for people and AI agents who need to see how files and folders use storage. It scans directories and presents results in a command-line interface and a browser UI, with treemap, sunburst, and list views. Entries are automatically grouped into categories such as caches, build artifacts, logs, media, version control metadata, and IDE files. The CLI can output JSON or newline-delimited JSON for scripts, agents, and tools such as jq. Its filters cover categories, file or directory type, minimum size, name patterns, and modification age, while directory scanning runs in parallel using rayon. duvis does not delete files or suggest deletions. It is free, with a Free plan listed as free, and the repository identifies it as MIT licensed. Installation options include cargo install duvis or building from source. On Unix, hard-linked files are counted once by default; Windows uses apparent size and does not deduplicate hard links.
Who it suits
duvis suits people who want to inspect disk usage without giving the tool permission to delete files, as well as agents and scripts that can use its JSON output. Its browser interface and CLI offer different ways to examine categorized scan results.
What it does well
- Read-only scanning does not delete files or recommend deletions.
- Browser UI includes treemap, sunburst, and list views.
- CLI supports JSON and newline-delimited JSON output.
- Filters include size, category, name, type, and age.
- Free and MIT licensed.
What to know first
- Windows does not deduplicate hard-linked files.
- Installation options involve cargo or building from source.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | MIT-licensed software; no paid plans or prices shown | Free |
As github.com lists them, read 11 Oct 2026. The maker's own page has the final word.
Verdict
duvis combines visual disk-use views with a script-friendly CLI, while keeping its scans read-only. Note the different hard-link accounting on Windows compared with Unix.
Facts from duvis's own pages
- AI and scripting
- The CLI can emit JSON or newline-delimited JSON for agents, scripts, and tools such as jq. · github.com, 11 Oct 2026
- Categories
- It automatically categorizes entries such as caches, build artifacts, logs, media, version control metadata, and IDE files. · github.com, 11 Oct 2026
- Exportable reports
- Yes · github.com, 23 Sept 2026
- Filters
- CLI filters include category, file or directory type, minimum size, name patterns, and modification age. · github.com, 11 Oct 2026
- Free plan
- Yes · github.com, 23 Sept 2026
- Hard links
- Hard-linked files are counted once by default on Unix, while Windows currently uses apparent size and does not deduplicate hard links. · github.com, 11 Oct 2026
- Headquarters
- Tokyo, Japan · github.com, 19 Oct 2026
- Installation
- The README gives cargo install duvis and building from source as installation options. · github.com, 11 Oct 2026
- License
- The repository identifies the software as MIT licensed. · github.com, 11 Oct 2026
- Maker
- The repository credits Kazuki Yamada in its MIT license notice. · github.com, 11 Oct 2026
- Platforms
- The README lists macOS, Linux, and Windows as supported platforms. · github.com, 11 Oct 2026
- Purpose
- duvis is a read-only disk usage analyzer that helps AI agents and people understand what is using disk space. · github.com, 11 Oct 2026
- Release
- The GitHub releases page lists v0.1.8 as the latest release. · github.com, 11 Oct 2026
- Safety
- The project describes duvis as read-only: it does not delete files or recommend deletions. · github.com, 11 Oct 2026
- Scanning
- Directory scanning runs in parallel using rayon. · github.com, 11 Oct 2026
- Scan scope
- files_folders · github.com, 23 Sept 2026
- Treemap view
- Yes · github.com, 23 Sept 2026
- Views
- It provides a CLI and a browser UI with treemap, sunburst, and list views. · github.com, 11 Oct 2026
Where duvis stands on Freedom251
- Disk Space Analyzers#9 of 105