Which duplicate files and folders finders exist for Windows?

I need a free duplicate file finder/remover app, with ability to find duplicate files/folders by name and/or by size and to remove one of duplicates.

Solution:

There was this Duplicate File Finder available for some time but now its only on secondary sites, like this Softpedia reference.

The Wareseeker site shows the correct reference http://dff.nazrashid.com/ which is no longer around. I would be careful fetching executables from such sites though.

It can do search for duplicates within multiple directory trees based on,

  • contents (i think it does a md5 match)
  • size
  • name
  • name and size
  • contents and name

And, it lets you filter your search by a minimum and maximum files size (speeds up things when you know the bounds).  

A very thoughtful piece of software. Don’t know if there is something as fast and featured for free around these days.


The comments refer to a similar Sourceforge tool called Doubles