WizTree analyzes disk space on Windows by reading the Master File Table to locate files and folders.
WinDirStat
WinDirStat analyzes disk usage on Windows by scanning drives and folders and showing how storage space is distributed.
About WinDirStat
WinDirStat is a free, open-source disk usage analyzer and cleanup assistant for Microsoft Windows. It scans folders, drives, network shares, or MTP devices and displays storage distribution through largest files, file types, treemaps, sunbursts, and flame graphs.
It can search by name, size, type, or owner; compare content hashes for duplicate detection; inspect permission entries; estimate storage tier costs; save or reopen scan snapshots; export CSV/JSON; automate scans; and watch file-system changes. It is Windows-only, and deleted-file recovery is limited to local NTFS, exFAT, and FAT drives.
Key features
- Scans folders, drives, network shares, or MTP devices; elevation accelerates local NTFS scans.
- Shows largest files, file types, treemaps, sunbursts, flame graphs; compares logical and physical sizes.
- Searches by name, size, type, or owner.
- Compares content hashes, with optional sparse hashing for probable duplicate matches.
- Inspects permission entries and estimates storage tier costs from sizes and modification ages.
- Saves/reopens snapshots, exports CSV/JSON, automates scans, watches changes, runs cleanup/recovery.
Best for: Windows users who want to find what is consuming disk space and investigate large or duplicate files before cleanup.
Good for
- Free and open source under the GNU GPL v3 or later.
- Can scan local drives, network shares, and MTP devices.
- Offers multiple views and search/duplicate tools for investigating disk use.
Watch out for
- Windows-only application.
- Deleted-file recovery is limited to local NTFS, exFAT, and FAT drives.
- Optional sparse hashing for duplicates produces probable matches, not guaranteed exact matches.
WinDirStat at a glance
- Website
- windirstat.net
- Category
- Software & Utilities › Hardware & Diagnostics
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web, Windows
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
WinDirStat alternatives
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WinDirStat FAQ
Is WinDirStat free?
Yes. It is free, open-source software distributed under the GNU GPL v3 or later.
What can WinDirStat scan?
It can scan multiple folders, drives, network shares, or MTP devices. Elevation enables accelerated local NTFS scans.
Can WinDirStat recover deleted files?
It can attempt to recover deleted files from local NTFS, exFAT, and FAT drives.
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