Gemini 2: The Duplicate Finder

Gemini 2: The Duplicate Finder screenshots

Locate and remove duplicate files, even if they're in remote corners of a system
Main window
Gemini 2: The Duplicate Finder 2.4 : Main window

Alternative downloads

Araxis Find Duplicate Files
This program helps you find and remove duplicated files from your Mac.
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ImElfin Tunes Cleaner for Mac
This application helps you clean up your iTunes library.