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Head-to-head · Disk Space Analyzers

SpaceObServer vs FolderSizes

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score SpaceObServer #5 in Disk Space Analyzers 8.8/10 Paid ✓ 4 of 5 features Visit SpaceObServer
FolderSizes #9 in Disk Space Analyzers 7.9/10 Free plan Free plan✓ 3 of 5 features Visit FolderSizes

SpaceObServer leads on 0 checks, FolderSizes on 1, and 4 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 scoreSpaceObServer · 8.8/10
  • Free planonly FolderSizes
  • Most featuresSpaceObServer · 4 of 5

SpaceObServer scores higher on our rubric for disk space analyzers: 8.8 against 7.9 out of 10; our editors rank them #5 and #9.

FolderSizes offers free plan; SpaceObServer doesn't.

SpaceObServer is the better fit for enterprise Windows storage reporting. FolderSizes is the better fit for windows reporting and scheduled analysis.

  • SpaceObServer fits best

    Enterprise Windows storage reporting

  • FolderSizes fits best

    Windows reporting and scheduled analysis

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Side by side

Feature SpaceObServer 8.8/10 Visit ↗ FolderSizes 7.9/10 Visit ↗
At a glance
Editor score 8.8 7.9
Ranking #5 in Disk Space Analyzers #9 in Disk Space Analyzers
Best for Enterprise Windows storage reporting Windows reporting and scheduled analysis
Pricing model Paid Free plan + paid
Starting price — $30 one-time
Free plan — ✓ (best)
Free trial — —
Deployment Self-hosted, Desktop Desktop
Platforms Windows Windows
Support Email, Phone Email
Built for Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features SpaceObServer 4/5 · FolderSizes 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
  • Directory, file, duplicate, history, and distribution analysis
  • Recurring scans with Excel, HTML, PDF, CSV, text, and image exports
  • Integrations across SharePoint, Azure Blob Storage, Amazon S3, and Linux/Unix
  • Scans local, network, mapped, UNC, and external drives
  • Finds large, old, duplicate, temporary, and other file classes
  • Supports scheduled reports, snapshots, trend analysis, and exports
Cons
  • Paid product with no free plan
  • Windows desktop deployment limits platform flexibility
  • Advanced automated reporting is limited to Enterprise Edition
  • Windows-only availability limits cross-platform use
  • Installed-application size analysis is not a dedicated view
  • Advanced reporting features require a paid edition
Our verdict

SpaceObServer is an on-premises Windows application for analyzing and managing storage across servers, shares, drives, and supported cloud storage systems. It is aimed at mid-market and enterprise organizations that need recurring…

Read the review →

FolderSizes is a Windows disk space analyzer for individuals, consultants, businesses, and IT administrators. It scans local drives, folders, network paths, mapped and UNC locations, and external drives, then reports folder and file sizes…

Read the review →
  1. SpaceObServerDisk Space Analyzers 8.8Paid
  2. FolderSizesDisk Space Analyzers 7.9Free plan

Strengths and trade-offs

  • SpaceObServer — where it wins

    • Directory, file, duplicate, history, and distribution analysis
    • Recurring scans with Excel, HTML, PDF, CSV, text, and image exports
    • Integrations across SharePoint, Azure Blob Storage, Amazon S3, and Linux/Unix

    Where it doesn't

    • Paid product with no free plan
    • Windows desktop deployment limits platform flexibility
    • Advanced automated reporting is limited to Enterprise Edition

  • FolderSizes — where it wins

    • Scans local, network, mapped, UNC, and external drives
    • Finds large, old, duplicate, temporary, and other file classes
    • Supports scheduled reports, snapshots, trend analysis, and exports

    Where it doesn't

    • Windows-only availability limits cross-platform use
    • Installed-application size analysis is not a dedicated view
    • Advanced reporting features require a paid edition

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