- Password Safe Pro
- My Expenses
- FL Studio, formerly Fruity Loops (also: Desktop)
- Threema
- Through the Ages (boardgame adaption)
Otherwise, I usually prefer free open source solutions (FDroid), but I regularly donate to keep the projects alive. 1 and 2 are small dev studios that I am happy to support.
I always found the actual challenge to decide what to get rid of once the duplicates where found.
Some tools I tried would also ask file-by-file, which I found a bit useless for thousand of files. Yet, I cannot even express a set of rules to decide this in general, so I’m not blaming the tools.
In particular, with picture collections I also came to the conclusion that some redundancy is probably ok rather than accidentially deleting data that I duplicated on purpose and simply forgot why.