I know not an ideal solution but after trying lots of foss applications, we decided to make our own solution. Other than that Nextcloud Deck is more than enough for most use cases
I develop on emacs with same PC config, run sql servers locally, maintain servers, office and mail stuff, all kind of communications, file operations, casting screen to a TV or projector, very good stylus and note taking abilities on my samsung tab 9 ultra dex mode with 4 days of battery life. You may think as an alternative
It's turned into a bigger project but it's internal use only, sorry