Prevent Duplicate Entries for Excel is a Microsoft Excel add-in that helps to prevent entering duplicate data while working in Excel.
Prevent Duplicate Entries for Excel integrates into MS Excel by placing its toolbar into the Excel toolbar area. The add-in allows defining where to check for duplicates in the active row, column or only in a selected area.
Duplicate tracking is also optionally possible with exactly the same data and data within different letter cases. Defined tracking options can be saved and then activated in one click when required.