Apparently this is retarded and I have been directed here.

I would like a free lightweight P2P offline LAN instant messenger client. Ideally, self-contained in one window.

I want to be able to send links to the person across the room without logging into some server.

I would like to be able to harass them in the rare event that the internet goes down

IPMSG is almost perfect, but everything comes through windows "notifications" and are invisible on the 2nd monitor when they're playing games.

I could probably force them onto Signal, Skype or Discord, but I'm convinced something like this exists

Thanks