AllDup
Find duplicates & reclaim storage space
AllDup is a powerful tool for professionally searching for duplicate files on your data carriers. Securely and efficiently find and remove duplicate files, whether by content, file properties, or special characteristics like similar images and music tracks. The integrated file manager gives you full control over deleting, moving, or backing up the found duplicates. Thanks to support for 25 languages, AllDup offers an intuitive user interface for users worldwide.
Basic Functions & Performance
- Support for Windows 11, 10, 8, 7 and Windows Server 2008 R2 to 2025 (32-bit & 64-bit)
- Freeware - Free for private users and companies
- Available as installable version or as Portable Edition
- Fast search algorithm
- Scan all storage media (NTFS, FAT, FAT32, exFAT) via drive letters or network paths
- Scan archive files (e.g., ZIP, RAR, 7Z) for duplicates
- Support for Unicode filenames and file path lengths up to 32,767 characters
- Save file checksums in a database and use them for further searches
- Filters to exclude folders or files from the search
- Search settings can be saved and restored in profiles
Search Methods
- Search for files with identical or similar content
- Search for identical or similar images
- Search for similar sound files
- Search for files with the same or similar name
- Search for files with the same size
- Search for files with the same modification or creation date
- Search for files with the same attributes
- Search for Hard links
- Search for video files with the same or almost same duration
- Search for sound files with the same or almost same duration
Search Result & Preview
- Clear display of found duplicates
- Preview of images, text, sound, and video files directly in the program
- Various commands for automatic selection of files based on specific criteria
- Search results can be saved and restored
- Export search results to a text file or Excel table
File Management
- Delete files and replace them with shortcuts
- Delete files and replace them with hard links
- Move files to the Windows Recycle Bin
- Move files to a backup folder
- Secure deletion of files