Klassieker!
zarlin
The 8Bit Do Ultimate is awesome, has both bluetooth and 2.4GHz low latency support. Not 100% sure about their Linux support though.
Edit: they are from China though, not EU (but also not US :)
It's Cathulhu!
Switched to Proton Duo just before the US shitshow started, still happy I did. So far mainly using it for mail, drive and calender, will be setting up VPN soon as well.
+1 for Secrid, they are sturdy and compact, and the card pop-up is super convenient.
I like the idea, but really dislike the name. Makes it sound like it should follow in USA's footsteps which exactly what we don't want.
+1 for Sumatra as a viewer, it's super fast, even with large documents.
Okular has support for filling forms, but I'm not sure if it has more advanced editing features.
A non-adobe, but closed-source alternative is Foxit. It's Chinese, so not EU, but also not US (:
This seems like the kind of data that can easily be added to a PiHole or Adguard Home blocklist, just need to find out which endpoint they are.