I know everyone likes tmux but screen is phenomenal. I have a .screenrc I deploy everywhere with a statusbar at the bottom, a set number of pre-defined tabs, and logging to a directory (which is cleaned up after 30 days) so I can go back and figure out what I did. Great tool.

It’s probably more than you are looking for but if you are already looking at self hosting things connected with NextCloud, use NextCloud Talk. We use it for the family and it is great.

This may not be exactly what you want, but I use Apache guacamole for this. The client becomes a web browser, and a chromium based browser allows seamless bidirectional clipboard. I use Ubuntu VMs with Mate as the DM and with a few keybinds tweaked it is solid. I use tightVNC as my server which supports dynamic resize, and the soon to be released guacamole 1.6 supports sending dynamic resize (since the underlying libraries are now updated to support it; RDP in guac already supports dynamic resize). How performant is it? I have a single proxmox vm which runs 3 Minecraft instances for our server’s 3 bot accounts (which just stand still) and the desktop is still navigable.