Open Source C# Duplicate File Finders

I developed this application because I was not happy with existing ones. The program analyzes two folders to determine whether they are identical or different by identifying files with the same name and/or size. The resulting list can be saved as a text file. Files with matching names and/or sizes can be deleted, but only those in the second directory will be removed. You can control which files are deleted through the textbox, as only the files displayed there will be deleted. Vary name similarity allows for the identification of files with similar names not exactly the same. Increasing the number of Vary name similarity and Word Size textboxes make the search more restricted.

Antares Duplicate File Finder is a convenient and flexible program for finding duplicate files

AFDP can help you free up hard drive space by detecting and removing duplicate files. Duplicate files have exactly the same contents regardless of their name, date, time and location. Also, AFDP is able to find files that are not exactly identical, but have the same file name. Perhaps you have different versions of a file and you want to find all of them and remove the older versions. AFDP can also find zero length files. These are files that have no content.

this application finds duplicate file in your system directory