RallyTone

Talk and chat with friends on your local network. RallyTone discovers nearby
parties, creates a party inside the desktop app, and joins desktop or
standalone RallyTone servers without an account or a cloud relay.

Core voice, text chat and party hosting are permanently free. Supporter Pack
purchases are currently unavailable on Linux.

Microphone access requires the audio-record connection. Global Push-to-Talk
shortcuts require X11; native Wayland global shortcuts are not supported.
Game overlays depend on the window manager and game display mode.