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Head-to-head · Disk Space Analyzers

TreeSize vs WinDirStat

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score TreeSize #1 in Disk Space Analyzers 9.3/10 Free plan · 14-day trial Free planFree trial✓ 4 of 5 features Visit TreeSize
WinDirStat #2 in Disk Space Analyzers 9.1/10 Free plan Free plan✓ 3 of 5 features Visit WinDirStat

TreeSize leads on 0 checks, WinDirStat on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreTreeSize · 9.3/10
  • Free planboth
  • Free trialonly TreeSize
  • Most featuresTreeSize · 4 of 5

TreeSize scores higher on our rubric for disk space analyzers: 9.3 against 9.1 out of 10; our editors rank them #1 and #2.

TreeSize is the better fit for windows power users and administrators. WinDirStat is the better fit for classic free Windows disk analysis.

  • TreeSize fits best

    Windows power users and administrators

  • WinDirStat fits best

    Classic free Windows disk analysis

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Side by side

Feature TreeSize 9.3/10 Visit ↗ WinDirStat 9.1/10 Visit ↗
At a glance
Editor score 9.3 9.1
Ranking #1 in Disk Space Analyzers #2 in Disk Space Analyzers
Best for Windows power users and administrators Classic free Windows disk analysis
Pricing model Free plan + paid Free
Starting price — Free plan
Free plan ✓ ✓
Free trial 14 days —
Deployment Desktop, Self-hosted Desktop
Platforms Windows Windows
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business
Features TreeSize 4/5 · WinDirStat 3/5
Treemap view ✓ ✓
Application sizes Not checked yet Not checked yet
File-type breakdown ✓ ✓
External drive scans ✓ (best) Not checked yet
Exportable reports ✓ ✓
Specs
Desktop platforms Windows Windows
Scan scope Files_folders Files_folders
Our review
Pros
  • Analyzes files, folders, drives, servers, networks, and cloud storage
  • Combines treemaps, file-type statistics, duplicate search, and cleanup tools
  • Supports scheduled scans, comparisons, portable use, and extensive exports
  • Interactive treemap makes large storage areas easy to spot
  • Duplicate detection supports content- or hash-based matching
  • CSV export, search, and filtering support follow-up analysis
Cons
  • Runs on Windows rather than across multiple desktop platforms
  • TreeSize Free is limited to private, non-commercial use
  • Advanced automation and reporting require paid editions
  • Windows-only availability limits cross-platform use
  • Scanning is focused on local drives and individual folders
  • Cleanup workflows are centered on files and scan results
Our verdict

TreeSize is Windows disk-space analysis software for individuals, power users, consultants, and IT administrators. It scans local and network storage, then presents folder and file sizes through directory, chart, pie, bar, and treemap…

Read the review →

WinDirStat is a free, open-source disk usage analyzer and cleanup tool for Microsoft Windows. It is designed for people who need to understand where storage is being used across local drives or individual folders. The interface combines…

Read the review →
  1. TreeSizeDisk Space Analyzers 9.3Free plan · 14-day trial
  2. WinDirStatDisk Space Analyzers 9.1Free plan

Strengths and trade-offs

  • TreeSize — where it wins

    • Analyzes files, folders, drives, servers, networks, and cloud storage
    • Combines treemaps, file-type statistics, duplicate search, and cleanup tools
    • Supports scheduled scans, comparisons, portable use, and extensive exports

    Where it doesn't

    • Runs on Windows rather than across multiple desktop platforms
    • TreeSize Free is limited to private, non-commercial use
    • Advanced automation and reporting require paid editions

  • WinDirStat — where it wins

    • Interactive treemap makes large storage areas easy to spot
    • Duplicate detection supports content- or hash-based matching
    • CSV export, search, and filtering support follow-up analysis

    Where it doesn't

    • Windows-only availability limits cross-platform use
    • Scanning is focused on local drives and individual folders
    • Cleanup workflows are centered on files and scan results
  • TreeSize9.3/10 · Free plan · 14-day trial

    A broad Windows analyzer with strong free features and tiered automation tools.

    Visit TreeSizeFull verdict →
  • WinDirStat9.1/10 · Free plan

    A classic Windows analyzer with treemaps, file breakdowns, duplicate detection, and CSV export.

    Visit WinDirStatFull verdict →

More comparisons

All disk space analyzers comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update