DiskSavvy

A Windows disk space analyzer that classifies files on local disks, network shares and NAS devices.

FreemiumProprietaryWindowsCommand line
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About DiskSavvy

DiskSavvy scans disks, directories, network shares and NAS storage and shows how space is used, with file categorization and filters, pie charts, history timeline charts and saved reports. It can also run file management operations on the results.

Beyond the GUI it includes a command-line utility, SQL database integration and a server edition for larger storage systems. Version 18.2 was released in June 2026.

Strengths

  • Analyzes network shares and NAS devices as well as local disks
  • Built-in file classification with charts and reports
  • Command-line utility and server edition

Limitations

  • Windows only
  • Advanced features are in paid editions
  • Interface is dense compared with simpler analyzers

Details

Pricing
FreemiumA free version is available, with paid editions for purchase.
License
Proprietary
Developer
Flexense
Platforms
Windows, Command line
How it runs
Downloadable app
Account
Not required
Works offline
Yes
Best suited for
Finding what fills local drives and network storage on Windows
Last verified
Added
Provenance
Facts checked against the developer's own pages and store listings, 1 sources on file.

Alternatives to DiskSavvy

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Software that can replace DiskSavvy for an important use case, and what changes if you switch.

  • FolderSizes

    A Windows disk space analyzer that reports folder sizes and finds large, old and duplicate files.

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    FolderSizes also analyses network shares on Windows and adds scheduled email reports and trend snapshots over time, with some features in the paid Pro edition.

  • TreeSize Free

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    TreeSize Free reads the NTFS master file table for quick scans and is free for commercial use, but reports, exports and duplicate search need a paid edition.

  • WizTree

    Finds what is eating a Windows disk in seconds by reading the NTFS master file table directly.

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    WizTree scans NTFS drives in seconds and shows a treemap with a sorted list and CSV export, though commercial use needs a paid licence.

  • WinDirStat

    Draws your whole drive as a treemap, so a single 40 GB file is a huge rectangle you cannot miss.

    FreeOpen sourceWindows

    WinDirStat is GPL-2.0 open source for Windows, draws the drive as a treemap and finds duplicates by hash, without DiskSavvy's classification reports or command-line edition.

  • SpaceSniffer

    Shows disk usage as a treemap you click into, so the biggest folders and files are immediately obvious.

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    SpaceSniffer is free, portable Windows freeware with a live-updating treemap, but it lacks DiskSavvy's file classification reports and command-line utility.

  • Filelight

    Shows disk usage as concentric rings you can click into.

    FreeOpen sourceWindowsLinux

    Filelight is GPL-2.0 open source for Windows and Linux, scans network locations too, and shows usage as clickable rings, though it pulls in KDE libraries.

  • Duc

    A set of tools that index disk usage into a database and show it in several interfaces.

    FreeOpen sourceLinuxCommand line

    Duc moves the job to Linux, indexing very large filesystems into a database and browsing them through console, graphical or web interfaces under the LGPL-3.0 license.

  • QDirStat

    A Qt-based graphical disk usage analyser with a directory tree and treemap view.

    FreeOpen sourcemacOSLinux

    QDirStat is GPL-2.0 open source for Linux and macOS with a treemap and tree view, but there is no Windows version.

Similar software

Related functionality, not necessarily a direct replacement.

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