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AllDup 4.5.72, developed by MTSD, is a Windows utility designed to locate and eliminate duplicate files across local drives, mapped network shares, and external storage devices, helping users reclaim disk space and reduce backup clutter. Leveraging a multi-threaded search engine, the program compares content by byte, checksum (CRC32, MD5, SHA-1), or specific attributes such as name, size, date, and extended properties, ensuring accurate detection of identical documents, images, audio tracks, video clips, and archives regardless of filename or folder path. Advanced filters let operators narrow scans to defined file masks, minimum/maximum sizes, or date ranges, while an integrated viewer previews pictures, text, and multimedia before deletion, move, or archive actions. Search results are presented in sortable lists that highlight redundant sets and provide one-click selection helpers—useful for housekeeping photo collections, synchronizing music libraries, deduplicating project folders, or preparing data migrations. The interface supports portable deployment, scheduled tasks, and exportable HTML or CSV reports for administrative documentation. AllDup is maintained in two major release branches—version 4.x being the current line—delivering incremental enhancements and Windows compatibility updates. The software is available for free on get.nero.com, with downloads provided via trusted Windows package sources (e.g. winget), always delivering the latest version, and supporting batch installation of multiple applications.
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