Duplicate Preventer

Pros:
An Excel add-in program to help users prevent entering duplicate data when they work in 
Excel. It's very handy, nimble and easy to use. This is another duplicate filter which is designed for Excel. Users who work with Excel would like it.

Cons:
This is a particular program for Excel users; compared with other duplicate filed finders, this one seems a little more special.

Benefits:
Some data are difficult to deal with, for these accurate jobs require one to be patient enough, otherwise it would make serious mistakes. To check the duplicate data is a boring job, especially there are considerable files merged in one Excel pack. Couldn't there a neat tool to help Excel users?

Although there are lots of duplicate finder programs, there is a fairly nice little tool for Excel users to prevent same data. It's called duplicate preventer. There are some other duplicate finder tools yet this one is particularly designed for helping Excel users to cope with data.

This tool is very light which will bundle itself with Excel after installation. To operate it is a piece of cake, even a beginner could master the operations by practice once only. 

Setup
It takes a few seconds to install. Since this program is showed itself as a toolbar bundled with Excel, the size of this file is very light. It's free from spyware as well as adware, so you can install it without hesitations.
Should you decide to remove this program, it does provide an uninstall icon on the system tray. Just click "Nimble Software"--"Uninstall", the program will die away from your system.

Interface
As an add-in program, there is no traditional interface of it. In order to see the interface of Duplicate Preventer, to startup Excel and you will see a toolbar--on the top of Excel, there is a tab called "Nimble"; when you click it there will be several options. It's no hard task at all that even a beginner could master the operations.

System requirements
Duplicate Preventer is compatible with Windows 98, 2000, ME, XP, and even Vista. It's lucky for an Excel user who often works on Vista. It's so light that the RAM requirement is neglectable, so is the taken hard space. Be ware of this requirement: as an Excel add-in utility, Microsoft Office (Excel) is a must for users--Microsoft Office 2000 or the higher versions will do.

Conclusion
Although Duplicate Preventer is a lightweight program, the functions are designed very considerate for users. Its Help file is very elaborate and convenient. In order to show how the program works, there are some charts to display the details. It can be seen as a must have program to those Excel users. This program could run on Vista OS thus a Vista and Excel user could adore it.