does the job right wihtout lots of bells and whistles

Easily found gigabytes worth of duplicated files on my Mac. Need to be careful that the duplicate wasn’t intentional (like UserA saves a copy in UserA Documents, and UserB saves the same thing in UserB Documents). It’s reasonably quick.
It provides a list of all duplicate files, and you can check which version to delete, OR you can “multiselect” all so you don’t have to click each one.
Additionally, there is a “safety” mechanism in that the duplicates are MOVED to the trash. You can always pull them out of the trash if you’ve made a mistake (nicely done!) up until you empty the trash.

It’s not flashy, but it got the job done efficiently and accurately as far as I can determine. Its exactly what you hope to find when downloading freeware. I’d recommend it.

dulac93 about Duplicates Cleaner, v1.1.0