Author: Michael Thummerer Software Design
https://www.allsync.biz/en_index.htm
Size: 3.2 MB
License: Freeware
Requires: Win 2000/03/08/XP/Vista/7

AllDup is a freeware tool for searching and removing file duplicates
on your computer. The fast search algorithm find duplicates of any
file type, e.g., text, pictures, music or movies. The powerful
search engine enables you to find duplicates with a combination of
the following criteria: File Name, File Extension, File Size, File
Content, Last Modified Date, Create Date, File Attributes and Hard
Links.

https://www.ryanvm.net/forum/viewtopic.php?t=8221