Hi Nauts,
thanks to the post of @karkwai (Black Friday / Cyber Monday 2018 Deals) i found Sononym (https://www.sononym.net/), a sample manager with some very nice filter algorithms and options for organizing samples.
This entry is not intended as advertising and i have nothing to do with Sononym, but it is a awesome sample manager which needs more support in my opinion. I had some conversation with the developer and it looks like that there are a lot of features on its way. He seems to be a very nice guy, is very helpful and i guess very open to meaningful feature requests. Worth to support. Just my two cents.