1)   Excel Unique & Duplicate Data Remover 1.1
Search and delete duplicate and unique entries, values, cells, records, rows, numbers in any list or selection with this Excel Addin. Finding and removing duplicates and uniques will save you hours of tedious work.

 2)   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.