The best Duplicate File Finder alternative to Finder is Double Commander, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Finder and six of them are Duplicate File Finders so hopefully you can find a suitable replacement. Other interesting Duplicate File Finder alternatives to Finder are XYplorer, Directory Opus, Thunar and xplorer².
Open-source file manager with dual-panel interface, inspired by Total Commander. Supports plugin use, advanced search, tabbed browsing, and runs smoothly with background operations. Unicode and multi-platform compatibility enhance its versatility.
XYplorer is a file manager for Windows. It features tabbed browsing, a powerful file search, a versatile preview, a highly customizable interface, optional dual pane, scripting engine, and a large array of unique ways to efficiently automate frequently recurring tasks.
Directory Opus is a complete replacement for Explorer, with far more power and functionality than any other file manager available today.
Thunar is a modern file manager for the Xfce Desktop Environment. Thunar has been designed from the ground up to be fast and easy-to-use. Its user interface is clean, intuitive, and customizable. Thunar is fast and responsive with a good start up time and directory load time.
xplorer² is a desktop file manager combining the simplicity of Windows explorer with the speed and efficiency of traditional dual pane file managers.
Rename, move, copy, delete, and otherwise manage multiple files. Rename multiple files according to the rules and pattern you specify using powerful editor with syntax highlighting. Copy, move files to folders specified using absolute/relative paths.
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it does not replace the Finder, but bring Windows Explorer to your Mac... = HORRIBLE way of working with files.