clipboard
url-select
keyboard-select

https://github.com/xyb3rt/urxvt-perls/tree/master

vtwheel
https://github.com/pkkolos/urxvt-scripts/tree/master

vtwheel2
https://superuser.com/questions/75141/mouse-wheel-scrolling-in-less-and-vim-using-urxvt


$HOME/.urxvt/ext/

xrdb ~/.Xresources