1)   Remove Duplicates from Excel 1.1.4
The add-on is designed for searching and processing duplicates in Excel tables. Program key functions: a search across rows or columns; search across an entire table or a specified range of cells; an opportunity to compare by values or formulas.

 2)   Easy Duplicate Finder 1.3
Easy Duplicate File Finder is a free powerful tool, that helps you to find and delete duplicate files. How do you think, what hard disk space on your PC is occupied by duplicate files? Easy Duplicate Finder will show you!

 3)   Space Hound 4 4.0.1849
Sniff out wasted space with The Best Duplicate File Finder available. Space Hound 4 eliminates duplicate and unused files that are cluttering up your hard drive and causing problems. Uncludes File & Directory Management, Zip & Unzip, file Viewers.

 4)   Mailing List Wizard 1.22
Excluding duplicated emails in mailing lists, correcting misspelled addresses using unique algorithms, filtering lists by varied criteria, merging lists, making exclusions, supplement lists with address owner names, and also many other things.

 5)   Remove Duplicate Files 3.29
Remove Duplicate Files - easily? Remove duplicate music files, remove duplicate MP3, remove duplicate photos, remove duplicate files of ANY type - automatically right now. More info and free duplicate remover download at RemoveDuplicateFiles.org

 6)   KeyCleanse 1.0
Stop spending hours wading through your keyword lists. KeyCleanse is a free application that can clean your keyword list in seconds. KeyCleanse removes the keywords that do not meet your requirements and leaves only the keywords you need.