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AllDup
Chonburi, Thailand
What it is
AllDup is Windows software for finding duplicate files and choosing how to handle them. It compares content, file properties, names, similar images and sounds, and the duration of video or sound files. Searches can cover NTFS, FAT, FAT32, and exFAT storage reached through drive letters or network paths, as well as ZIP, RAR, and 7Z archives. After a search, the file manager can delete, move, or back up duplicates; other listed options include shortcuts, hard links, and secure deletion. Previews are available for image, text, sound, and video files, and results can be exported to text or Excel. AllDup comes as an installer or Portable Edition. Its free plan is free for private users and companies. The maker lists Windows 11, 10, 8, and 7, plus Windows Server 2008 R2 through 2025, in 32-bit and 64-bit versions. Hard links work only between files on the same local NTFS partition.
For and against
For
- Free for private users and companies.
- Scans supported drives, network paths, and archives.
- Previews image, text, sound, and video files.
- Offers installable and portable editions.
- Exports results to text or Excel.
Against
- Windows only.
- Hard links require the same local NTFS partition.
The verdict
AllDup offers several ways to identify duplicates and gives users multiple options for handling them. Its Windows-only availability and hard-link restriction are worth noting.
Who it suits
AllDup suits Windows users who want to locate and manage duplicate files across local or network storage and supported archives. It may also suit people who need previews or exportable search results.
Plans and prices
AllDup Freeware
Free for private users and companies · Windows only
Read 30 Sep 2026 · alldup.de
On the record
- Download security
- The maker says its files are digitally signed and guaranteed free of adware, spyware, and viruses, and provides SHA1 checksums.alldup.de · read 30 Sep 2026
- Download version
- The download page lists version 4.5.72, dated 17.12.2025, with installation and portable downloads.alldup.de · read 30 Sep 2026
- File handling
- Its file manager can delete, move, or back up found duplicates; the product page also lists shortcuts, hard links, and secure deletion.alldup.de · read 30 Sep 2026
- Hard-link limits
- Hard links require files on the same local NTFS partition; they cannot be created on network drives or in virtual folders referring to external data.alldup.de · read 30 Sep 2026
- Languages
- The download page lists 25 interface languages.alldup.de · read 30 Sep 2026
- Maker
- The maker identifies itself as MTSD and says it was founded in 1999.alldup.de · read 30 Sep 2026
- Operating systems
- The maker lists Windows 11, 10, 8, and 7 plus Windows Server 2008 R2 through 2025, in 32-bit and 64-bit versions.alldup.de · read 30 Sep 2026
- Portable edition
- AllDup is available as an installable version or Portable Edition.alldup.de · read 30 Sep 2026
- Previews and exports
- The program previews images, text, sound, and video files, and can export search results to a text file or Excel table.alldup.de · read 30 Sep 2026
- Purpose
- AllDup searches for and removes duplicate files by content, file properties, similar images, and music tracks.alldup.de · read 30 Sep 2026
- Search methods
- It can find identical or similar content, images, sound files, names, and video or sound files with similar duration.alldup.de · read 30 Sep 2026
- Storage scanning
- It scans NTFS, FAT, FAT32, and exFAT storage through drive letters or network paths, and can scan ZIP, RAR, and 7Z archives.alldup.de · read 30 Sep 2026
- Support
- AllDup support materials include online documentation, a support forum, and a technical support request form.alldup.de · read 30 Sep 2026
