Read smart reviews:

• Duplicate File Detector - take the burden off your hard drives in a few clicks — Today, when hard drives have grown to enormous sizes, we don’t really care when copying files around, downloading software from the Internet and storing documents to locations that seem to be most convenient in a specific situation. All that results of dozens and hundreds of identical files being stored on your hard drive or drives, which, apart from being plain confusing, creates unwanted mess and decreases the free hard drive…
• Duplicate File Finder .NET - a jolt of fresh air for a clogged hard drive — Since the majority of today’s hard drives are measured in hundreds of gigabytes or even in terabytes, we rarely pay attention to how we keep our data organized, if at all. A visit of a friend with a portable hard drive full of movies, photos and music or a LAN party leaves chaos on your data storage and you may be quite surprised to find several copies of the same folders and files…