@Epzillon
I use #LibreElec with #Zattoo and #Netflix addon on an old Laptop. For remote control, I use a Remote with Bluetooth and Infrarot.
Currently I play around with #GamesOnWhales and its fork #Quasar for game streaming.

@curbstickle
The problem is that this both are used by proxmox. So in best case I could use one of these both.

@DarkMetatron @SuspiciousCarrot78
I used DeltaChat some Years ago. I’ts suprising good but did not fit into my case.
It may fit perfectly here, I could recommend it as an internal chat solution.