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Head-to-head · Duplicate File Finders

Czkawka vs CloneSpy

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Czkawka #2 in Duplicate File Finders 8.8/10 Free plan Free plan✓ 4 of 4 features Visit Czkawka
CloneSpy #18 in Duplicate File Finders 6.8/10 Free plan Free plan✓ 2 of 4 features Visit CloneSpy

Czkawka leads on 0 checks, CloneSpy 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 scoreCzkawka · 8.8/10
  • Free planboth
  • Most featuresCzkawka · 4 of 4

Czkawka scores higher on our rubric for duplicate file finders: 8.8 against 6.8 out of 10; our editors rank them #2 and #18.

On platform coverage, Czkawka gives you Cross-platform where CloneSpy offers Windows.

Czkawka is the better fit for technical users wanting free cross-platform software. CloneSpy is the better fit for free Windows users needing link management.

  • Czkawka fits best

    Technical users wanting free cross-platform software

  • CloneSpy fits best

    Free Windows users needing link management

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Side by side

Feature Czkawka 8.8/10 Visit ↗ CloneSpy 6.8/10 Visit ↗
At a glance
Editor score 8.8 6.8
Ranking #2 in Duplicate File Finders #18 in Duplicate File Finders
Best for Technical users wanting free cross-platform software Free Windows users needing link management
Pricing model Free Free
Starting price Free plan Free plan
Free plan ✓ ✓
Free trial — —
Deployment Desktop, Mobile Desktop
Platforms Windows, macOS, Linux, Android Windows
Built for Solo, Small business Solo
Features Czkawka 4/4 · CloneSpy 2/4
File preview ✓ (best) Not checked yet
Automatic selection ✓ ✓
Recycle Bin / Trash ✓ (best) Not checked yet
Folder exclusions ✓ ✓
Specs
Platform coverage Cross-platform Windows
Scan locations User-selected local directories and paths Selected local folders and files; checksum files made from DVDs or hard drives can be used for comparisons.
Match methods File name, file size, name and size, or full-content hash Binary content comparison; file name, title or extension; same name or title with similar size; zero-byte status.
Our review
Pros
  • Free and open source across Windows, macOS, Linux, and Android
  • Multiple hash methods, caching, exclusions, previews, and selection presets
  • CLI support for scripting, dry runs, JSON output, and automated deletion
  • Compares identical contents regardless of filename, date, time, or location
  • Supports DVDs, network drives, checksum files, and local storage
  • Replaces redundant files with shortcuts or NTFS hard links
Cons
  • Scan locations are limited to user-selected directories and files
  • Media matching is narrower than its broader file-cleanup toolkit
  • The legacy GTK interface no longer receives new binaries
  • Windows-only platform coverage
  • Published version 3.43 dates to 2019
  • Less focused on media-oriented duplicate management
Our verdict

Czkawka is a free, open-source file-cleanup suite for technical users who want duplicate detection across Windows, macOS, Linux, and Android-related frontends. It identifies duplicates by file name, size, full-file hash, or combined size…

Read the review →

CloneSpy is a free Windows utility for locating duplicate and zero-length files across local folders and hard drives, DVDs, network drives, and checksum files. It suits Windows users who want detailed control over how duplicates are…

Read the review →
  1. CzkawkaDuplicate File Finders 8.8Free plan
  2. CloneSpyDuplicate File Finders 6.8Free plan

Strengths and trade-offs

  • Czkawka — where it wins

    • Free and open source across Windows, macOS, Linux, and Android
    • Multiple hash methods, caching, exclusions, previews, and selection presets
    • CLI support for scripting, dry runs, JSON output, and automated deletion

    Where it doesn't

    • Scan locations are limited to user-selected directories and files
    • Media matching is narrower than its broader file-cleanup toolkit
    • The legacy GTK interface no longer receives new binaries

  • CloneSpy — where it wins

    • Compares identical contents regardless of filename, date, time, or location
    • Supports DVDs, network drives, checksum files, and local storage
    • Replaces redundant files with shortcuts or NTFS hard links

    Where it doesn't

    • Windows-only platform coverage
    • Published version 3.43 dates to 2019
    • Less focused on media-oriented duplicate management
  • Czkawka8.8/10 · Free plan

    A free, scriptable duplicate finder for technical users across Windows, macOS, Linux, and Android.

    Visit CzkawkaFull verdict →
  • CloneSpy6.8/10 · Free plan

    A capable free duplicate finder with strong link and checksum options for Windows.

    Visit CloneSpyFull verdict →

More comparisons

All duplicate file finders comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update