dup (3 products)

CloneMaster 2.192 (Shareware, $29.95)

CloneMaster will clean your hard drive of duplicate files that are just wasting space. It searches for TRUE duplicate files (byte for byte), same-name files and zero-length files and bring them to your attention. It include Smart Delete, Rename, Save as. and other functions. The Smart Delete is a filter for flagging files for deletion. CloneMaster identifies duplicates based on name, byte size, data, and so on. Also there is a security feature that you can enable to leave your windows directory alone. That is, CloneMaster will not process any files and subdirectories within your Windows folder. You can also Deselect all files too.

Comparator 2.21 (Freeware)

Keeping track of files and protecting them from loss or damage is a never ending chore for any active PC user. Here is a simple utility that will take some of the insecurity and the tedium out of finding, deleting and copying over duplicate or version files. With Comparator, you won't need to open two Explorer windows to make painstaking comparisons but you'll still have the Windows system menu available to you by right-clicking a file. Here, too, is an alternative to the Microsoft® Briefcase -- install this program everywhere you go to keep shared files in sync. Finally, don't neglect full backup routines, but do make use of Comparator to quickly update a small backup set before you get down to some serious work. You can also run Comparator in multi-language interface (all menus, dialog texts and messages). Or create your own language by editing the language file directly.

ComparatorPro 3.13 (Shareware, $19.95)

ComparatorPro will finds, deletes and copies over duplicate files, will compare files and folders, also find missing files and perform full backup routines. And here, too, is an alternative to the Microsoft® Briefcase -- install ComparatorPro everywhere you go to keep shared files in sync. And finally, don't neglect your full backup routines, but do make use of ComparatorPro to quickly update backup set before you get down to some serious work. Features... Time stamp threshold, Generate file's CRC, Compare by file's content, Dual-Pan view of related folders, MS Explorer style view. With ComparatorPro, you won't need to open two Explorer windows to make painstaking comparisons but you'll still have the Windows system menu available to you by right-clicking a file. You can also run ComparatorPro in multi-language interface (all menus, dialog texts and messages). Or create your own language by editing the language file directly.