Download the free AllDup software. Easily remove duplicate files from your PC. Get the full Installer file for new installations or the small Update file for existing versions.

AllDup is a freeware tool for searching and removing file duplicates on your Windows computer. The fast search algorithm find duplicates of any file type, e.g., text, pictures, music or movies.

Access the official AllDup Manual. Learn how to effectively find and delete duplicate files, similar pictures, music, and hard links. Detailed guides on search methods, filters, and options.

Explore the complete AllDup version history, clearly documented with new features, improvements, and bug fixes. See the latest update (July 14, 2025) for new selection …

Mit AllDup steht Ihnen die kostenlose Lösung zum Suchen und Entfernen von doppelt vorhandenen Dateien unter Microsoft Windows zur Verfügung. AllDup durchsucht Ihre …

Use the AllDup File Manager to delete, copy, move, or rename selected files from search results. Learn how to configure group processing, set up a backup folder, and apply filters.

Scan and compare multiple file types with AllDup. With AllDup Duplicate Finder you can easily and quickly search your computer for duplicate files of all types.

Access the complete AllSync 4 Manual. Find detailed guides on installation, licensing, features, system requirements, Profiles, QuickSync, Scheduler, and advanced command line tools.

Explore AllSync Business, Professional, and Home Editions, plus AllDup. Get the professional solution for data synchronization, backup, imaging, and archiving under Windows.

AllDup is a powerful, free tool for Windows that finds and deletes duplicate files (photos, videos, music) by name, content, or date. Free up space and boost PC performance.