AllDup vs Duplicate File Detective

AllDup9.0Visit Duplicate File Detective7.3Visit

Higher score AllDup #1 in Duplicate File Finders 9.0/10 Free plan Free plan✓ 4 of 4 features Visit AllDup

vs

Duplicate File Detective #12 in Duplicate File Finders 7.3/10 15-day trial Free trial✓ 4 of 4 features Visit site

• AllDup fits best

  Windows users wanting a fully free finder

• Duplicate File Detective fits best

  Windows users wanting reports and scheduling

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Side by side

Feature	AllDup 9.0/10 Visit ↗	Duplicate File Detective 7.3/10 Visit ↗
At a glance
Editor score	9.0	7.3
Ranking	#1 in Duplicate File Finders	#12 in Duplicate File Finders
Best for	Windows users wanting a fully free finder	Windows users wanting reports and scheduling
Pricing model	Free	Paid
Starting price	Free plan	$30 one-time
Free plan	✓ (best)	—
Free trial	—	15 days
Deployment	Desktop	Desktop
Platforms	Windows	Windows
Features AllDup 4/4 · Duplicate File Detective 4/4
File preview	✓	✓
Automatic selection	✓	✓
Recycle Bin / Trash	✓	✓
Folder exclusions	✓	✓
Specs
Platform coverage	Windows	Windows
Scan locations	local drives and storage media; network paths and shares; archive files including ZIP, RAR, and 7Z	local drives; network shares; NAS devices; removable storage; file server shares
Match methods	file content; image similarity; sound similarity; filename; file size; modification or creation date; file attributes; hard links; video or sound duration	file name; extension; file size; CRC32; MD5; SHA-1; SHA-256; SHA-512; byte-for-byte content; visual image comparison; document properties; audio tags
Our review
Pros	Matches files by content, names, metadata, media similarity, and duration Scans local storage, network paths, and ZIP, RAR, and 7Z archives Previews results and automates selection before sending files to Recycle Bin	Matches files by checksums, bytes, visual appearance, properties, and audio tags Scans local drives, network shares, NAS devices, removable storage, and file servers Adds previews, SmartMark rules, scheduled reports, and duplicate management actions
Cons	Available only for Windows Does not include AI features Integrations focus on Windows media and document applications	Windows-only, with no support for other platforms The Personal Edition excludes scheduling and other automation features No free plan; paid access starts at a $30 one-time license
Our verdict	AllDup is a free Windows utility for locating and managing duplicate files across local drives, storage media, network paths, and supported archive files. It suits Windows users who want broad control without a paid plan, including private… Read the review →	Duplicate File Detective is Windows software for locating, reviewing, and managing duplicate files across local drives, removable storage, network shares, NAS devices, and file servers. It suits Windows users who need more than a basic… Read the review →

Strengths and trade-offs

• AllDup — where it wins

  • Matches files by content, names, metadata, media similarity, and duration
  • Scans local storage, network paths, and ZIP, RAR, and 7Z archives
  • Previews results and automates selection before sending files to Recycle Bin

  Where it doesn't

  • Available only for Windows
  • Does not include AI features
  • Integrations focus on Windows media and document applications

• Duplicate File Detective — where it wins

  • Matches files by checksums, bytes, visual appearance, properties, and audio tags
  • Scans local drives, network shares, NAS devices, removable storage, and file servers
  • Adds previews, SmartMark rules, scheduled reports, and duplicate management actions

  Where it doesn't

  • Windows-only, with no support for other platforms
  • The Personal Edition excludes scheduling and other automation features
  • No free plan; paid access starts at a $30 one-time license

• AllDup9.0/10 · Free plan

  A fully free Windows duplicate finder with broad matching and cleanup controls.

  Visit AllDupFull verdict →
• Duplicate File Detective7.3/10 · 15-day trial

  A Windows duplicate finder with deep matching, previews, automation, and scheduled reporting.

  Visit siteFull verdict →