Quick search in NAS. Which software for overview? We use a NAS in our small company to acces our files from different locations. Searching within the NAS does not work well due to the amount of data stored and slow internet connection. So if we're looking for a file, we need to know exactly where it is.
I do not need a NAS-side solution since the operating system of the NAS is very inflexible.
Is there a way to keep an up-to-date overview of the complete folder/file struture (as text, tree, table, whatever) in which we can quickly search for the files?
This solution is vexing and hard to solve generally.
We have had great success with one product and have tried many, none seem to work well as they don’t solve the remote index and then share that index out nail on the head.

https://cdfinder.de/

The marketing calls it the holy grail of media asset management, and I think that’s a little bit of an understatement. It does more than just that, it scales and is extensible and you can automate on top of it.
As you mention, the indexing would have to run on naps to be perpetually up to date, but periodic index scans by NeoFinder work well for us.