Dupemerge has been discontinued. Similar apps include FSlint, which is free and open source. Other options are FindDupe, Duplicate Commander, Duplicate File Hard Linker and FindLinks. In total there are five Duplicate File Finders like Dupemerge for Windows and Linux.
FSlint is a utility to find and clean various forms of lint on a filesystem. I.E. unwanted or problematic cruft in your files or file names. For example, one form of lint it finds is duplicate files. It has both GUI and command line modes.
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Finddupe is a tool for quick detecting of duplicate files on a hard drive under Windows. Duplicate files can be detected, hardlinked, or deleted. Finddupe can also search for hardlinked files on your computer.
Duplicate Commander is a free application designed to allow you to find and manage duplicate files on your computer. Duplicate Commander aims to be fast and easy to use. Version 3.0 sports a brand new interface, new search engine, and over 40 bug fixes.
Small command line tool to reduce the size of duplicate files on one partition. Despite all other known tools the files in this implementation are not being listed, archived or removed but going to be hard linked using NTFS hard links. The tool runs in Windows NT 4.
FindLinks reports the file index and any hard links (alternate file paths on the same volume) that exist for the specified file. A file's data remains allocated so long as at it has at least one file name referencing it.
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