Duplicate File Finder is a FREE tool designed to find and delete duplicate files over home and corporate network while no software installed on another computer.
Fast byte-to-byte comparison gives you the accurate results and it searches duplicate file contents regardless of filename. A list of duplicate files can be removed, moved, or copied.
Download: 
Ashisoft.Duplicate.File.Finder.Pro.8.1.0.1.rar - 2.9 MB