tmux

tmux does better multiplexing compared to dtach, mtm and built-in terminal multiplexers (e.g. wezterm)
Void applies a reallocarray.patch
--enable-sixel is needed to prevent crashes in sixel terminals
Depends on libevent and netbsd-curses
Check if --enable-utempter works with utmps
Check /usr/share/doc/tmux/examples/tmux.conf and install tmux.conf