AllDup vs Anti-Twin
AllDup
alldup.deAnti-Twin
antitwin.orgSide by side
| Figure | AllDup | Anti-Twin |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Windows | Yes | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| Plans published | 1 | 1 |
| Spec score · Duplicate File Finders | 8.0 (#9) | 8.1 (#6) |
| Founded | 1999 | 2003 |
| Purpose | AllDup searches for and removes duplicate files by content, file properties, similar images, and music tracks. | Anti-Twin searches a hard disk for duplicate or similar files and can send found files to the recycle bin or delete them. |
Plans
In their own words
Anti-Twin
Anti-Twin searches hard disks and other storage locations for duplicate or similar files. It can compare names, check file contents byte by byte, search for binary similarity, and compare images by their pixels. The image method can find similar pictures even when they have different compression rates or file formats. Search locations include local drives, USB flash disks, memory cards, shared network folders, and a second folder or path. Results can be selected automatically, exported as an Excel file, and sent to the Recycle Bin or deleted.
The program is free for private use and dates to 2003. The download page lists 32-bit and 64-bit Windows, and says it can run through Wine on Linux or Mac and on ReactOS. It can also be installed and started from a USB memory stick. Anti-Twin does not search the Internet or FTP servers, excludes files larger than 2 GB from comparisons, and has no restore function for deleted files. The site says it was maintained until 2012 and still runs on Windows 10 and 11.