Application to delete duplicates

[haygun]

Does anyone know of a good, free/cheap application that will search my entire HardDrive and notify me of possible duplicates?

 

[r.j.s]

Not free, but there is this.

 

[dirt farmer]

Singular is free!

Be sure to go to the Register tab and get the evaluation key. For over a year now, they say they "cannot issue licences" due to changes, and this eval. key seems to work indefinitely.