Anyone have any suggestions for a really good dupe file finder? Something that can at the very least calculate hashes and compare several folders at once (that don't necessarily have the same parent) ...

My mom keeps running out of space. I run OmniDiskSweeper when I visit, but that doesn't seem to do the trick. She has a gargantuan iPhoto library, which is probably part of the issue. What she needs ...

If your Mac is running low on storage, chances are that duplicate files and photos occupy a significant part of it. If the number is low, you can get away by performing a manual search, a terminal ...