Wide Angle Software (http://www.wideanglesoftware.com/) says its Windows duplicate file remover application, Duplicate Sweeper, is now also available on Mac OS X (10.8 or higher). It’s designed to make finding, selecting and removing duplicate files on your Mac quick and easy.
Duplicate Sweeper enables you to search for duplicates of all file types, such as your photos, videos, music or documents and you can select which folders to search for duplicate files in. For even more control, search preferences can be added so that only files matching your given criteria are searched. Duplicate Sweeper can ignore files that are larger than and/or smaller than given sizes. It can also ignore files with the given file extensions so that any important file types can be left out of the search.
Once Duplicate Sweeper has found all of the duplicates in the given folders, it allows you to select which files from the duplicates you wish to remove. Duplicate Sweeper has a built in document viewer so that you can check a file isn’t important before selecting to remove it.
Duplicate Sweeper for Mac is available from Apple’s Mac App Store as well as Wide Angle Software’s website at an introductory price of US$5.99 (the regular price is $19.99). At the Wide Angel site, you can download a free trial version for evaluation before committing to a purchase.