WinDirStat vs TreeLens

WinDirStat9.1Visit TTreeLens3.5Visit

Higher score WinDirStat #2 in Disk Space Analyzers 9.1/10 Free plan Free plan✓ 3 of 5 features Visit WinDirStat

vs

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

• WinDirStat fits best

  Classic free Windows disk analysis

• TreeLens fits best

  Windows users wanting portable open-source analysis

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Side by side

Feature	WinDirStat 9.1/10 Visit ↗	TTreeLens 3.5/10 Visit ↗
At a glance
Editor score	9.1	3.5
Ranking	#2 in Disk Space Analyzers	#53 in Disk Space Analyzers
Best for	Classic free Windows disk analysis	Windows users wanting portable open-source analysis
Pricing model	Free	Free
Starting price	Free plan	Free plan
Free plan	✓	✓
Free trial	—	—
Deployment	Desktop	Desktop
Platforms	Windows	Windows
Built for	Solo, Small business	Solo, Small business
Features WinDirStat 3/5 · TreeLens 3/5
Treemap view	✓	✓
Application sizes	Not checked yet	Not checked yet
File-type breakdown	✓	✓
External drive scans	Not checked yet	Not checked yet
Exportable reports	✓	✓
Specs
Desktop platforms	Windows	windows
Scan scope	Files_folders	Files_folders
Our review
Pros	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	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	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	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	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 →	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 →

Strengths and trade-offs

• 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

• 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.

• WinDirStat9.1/10 · Free plan

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

  Visit WinDirStatFull verdict →
• TTreeLens3.5/10 · Free plan

  A portable Windows analyzer with treemaps, duplicate finding, exports, and snapshots.

  Visit TreeLensFull verdict →