Capacitra

What Capacitra is

Capacitra is a free, offline storage analyzer for Windows that maps disk usage in a treemap, tree, and charts. Its multithreaded crawler scans a drive or selected folders, and results can be browsed while a scan continues. The app includes a squarified treemap, pie and bar charts, file type categories, and file age cohorts. A duplicate finder groups files by size and verifies them with SHA-1. Users can export reports as CSV, HTML, PDF, or Excel, and save portable scan snapshots for later comparison. For unattended work, Capacitra provides a scriptable command-line interface for headless scans and can schedule daily scans through Windows Task Scheduler. It can scan mapped drives and UNC network paths, while results remain on the local machine. Within the app, files and folders can be moved to the Recycle Bin; Capacitra says it never hard-deletes them. The maker says scans stay on the computer and the app has no telemetry, analytics, crash reporter, or cloud uploads. Capacitra is a portable, single-file Windows executable released under GNU General Public License v3. The free plan supports personal and commercial use, has no locked features, and is not a time-limited trial.

Who it suits

Capacitra suits Windows users who want to inspect drive or folder usage, find duplicate files, and export scan reports. Its command-line interface and Task Scheduler support also suit users who want headless or daily scans.

Limits

The free plan is for Windows 10 and 11 (x64). It has no locked features and is not a time-limited trial.

Getting started

1. Download the portable single-file Windows executable from Capacitra.
2. Run it on Windows 10 or 11 (x64).
3. Choose a drive, selected folders, mapped drive, or UNC network path to scan.
4. Browse the scan results or export a report or portable snapshot.
5. For scheduled scans, use the command-line interface with Windows Task Scheduler.

Verdict

Choose Capacitra if you want a free Windows storage analyzer with visual reports, duplicate checks, and scan automation. Look elsewhere if you need a desktop platform other than Windows.