Another possibility is using Excel 2013 from Microsoft Office 2013 suite.
Excel remove duplicates – unordered data setExcel remove duplicates – unordered data set selected
Starting with your set of data, select the column(s) for which you want to remove duplicates.
Then, from the DATA menu, select the “Remove duplicate” options.
Excel data remove duplicates menu
In the popup, select if your data has header or not (meaning, a first line that will not be considered in the operation), and the columns you want to consider, and click Ok.
Excel data remove duplicates popup options
You should get a confirmation with the amount of duplicates deleted and unique values remaining.
Excel data remove duplicates success message
Finally, you might want to sort the data. Keeping your selection, in the same DATA menu, select ascending or descending sort, and voilà !
Excel data sort menuExcel data sorted without duplicates