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Head-to-head · Disk Space Analyzers

TreeSize vs TreeLens

  • 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
TreeLens #53 in Disk Space Analyzers 3.5/10 Free plan Free plan✓ 3 of 5 features Visit TreeLens

TreeSize leads on 0 checks, TreeLens 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 3.5 out of 10; our editors rank them #1 and #53.

TreeSize is the better fit for windows power users and administrators. TreeLens is the better fit for windows users wanting portable open-source analysis.

  • TreeSize fits best

    Windows power users and administrators

  • TreeLens fits best

    Windows users wanting portable open-source analysis

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature TreeSize 9.3/10 Visit ↗ TreeLens 3.5/10 Visit ↗
At a glance
Editor score 9.3 3.5
Ranking #1 in Disk Space Analyzers #53 in Disk Space Analyzers
Best for Windows power users and administrators Windows users wanting portable open-source 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 · TreeLens 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
  • Squarified treemap shows storage usage with file-type coloring.
  • Hash-based duplicate finder helps identify repeated files.
  • CSV, JSON, and portable snapshot support aid analysis and review.
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, with no support listed for other platforms.
  • MFT fast scanning applies only to eligible elevated whole-volume scans.
  • Focused on local storage rather than server-based or cloud analysis.
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 →

TreeLens is a free, open-source Windows desktop utility for examining local storage usage. It scans folders and drives through parallel directory traversal, then presents the results in a squarified treemap that supports drill-down to…

Read the review →
  1. TreeSizeDisk Space Analyzers 9.3Free plan · 14-day trial
  2. TreeLensDisk Space Analyzers 3.5Free 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

  • TreeLens — where it wins

    • Squarified treemap shows storage usage with file-type coloring.
    • Hash-based duplicate finder helps identify repeated files.
    • CSV, JSON, and portable snapshot support aid analysis and review.

    Where it doesn't

    • Windows-only, with no support listed for other platforms.
    • MFT fast scanning applies only to eligible elevated whole-volume scans.
    • Focused on local storage rather than server-based or cloud analysis.

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