NoClone

NoClone - Uncover true duplicate files; Recover valuable disk space.
NoClone Find and Remove TBIZE Duplicate files
New Support forum - be first to post your suggestions, bug reports and applications (11 Aug 2006)
You may not realize how many duplicate files you have after downloaded many files from the Internet or duplicate files scattered over your home or corporate network. Duplicate files are usually redundant and unnecessary, so keeping them is merely a waste of valuable hard disk space. Your hard drives may be full of documents, mp3, photos and video and many of them are redundant. NoClone finds and removes duplicate files regardless of file name. Time-saving Smart marker filters duplicates for removal or archival. ZDNet recommended her - Stop repeating yourself: Duplicate file finders. Customers include Boeing, California State Government, University of Memphis, WWF, and Disneyland Resort etc.

NoClone Features:
True Byte-by-byte comparison , not by CRC / MD5, totally safe to delete files.
Search duplicate file contents regardless of file name
Search duplicate pictures (jpg, gif), video (avi, mpg), songs(mp3), DLLs and any file types
Search files with same contents, same name, zero size and truncated files.
Simple fuzzy match
Smart marker of duplicate files by date, version, size, folder and file name pattern
Preview files, show file versions and properties
Save search session / Export result list to CSV format
Search local hard drives (Home ed.) and over network (Enterprise ed.) - comparison
Benefits:
Identify and recover wasted disk space
Reduce backup time and media used for backups
Reduce file searching time
Minimize time used to unneeded virus scanning
Obtain more free space on "limited" resources, like notebooks
Remove duplicate files to eliminate synchronization problem
Clean up hard disks
Cheaper than buying a new hard drive