Detwinner is a file comparing application that uses very sophisticated algorithms for file comparison. Nothing can escape from its eyes You can use it to search files by specifying ranges of file size or file write date. It creates file masks to search or ignore files. It skips hidden and system files and moves duplicate files into recycle bin or backup folder or even deletes them permanently. You have standard presets available for searching duplicates and can even customize these presets. This tool lets you to select the oldest duplicate files or files with the longest path or name. You can search for duplicates among audio, video, image, photos or documents.