What are some alternatives?
When comparing Pixiple and Duplicate Remover Free, you can also consider the following products
VisiPics - VisiPics does more than just look for identical files, it goes beyond checksums to look for similar...
dupeGuru - dupeGuru is a tool for finding duplicate files on your computer.
Easy Duplicate Finder - Free download! Find and delete duplicate files with Easy Duplicate Finder™. Get rid of annoying duplicates on your Windows and Mac.
AntiDupl - AntiDupl.NET can find and display duplicate images in the main graphic formats: JPEG, GIF, TIFF...
MacPaw Gemini 2 - The intelligent duplicate file finder
Duplicate Cleaner - Duplicate Cleaner: the fastest and most popular tool for finding duplicate files. Over 1 million downloads: Get your copy now! Free and Pro versions available.