Author: Vincenzo Iuorno
https://www.fxsearch.com/ldw_eng/
License: Freeware
Requires: Win7/Vista/XP

Freeware disktool allows you to search for duplicate files by name or content; search for a text in any file including PDF-Files; search for files using various parameters such as file size, date, attributes; and display disk overview (total size, free space).

https://www.ryanvm.net/forum/viewtopic.php?t=9557