urxvt
copypasted from
http://www.jukie.net/~bart/blog/urxvt-url-yank
~/.Xdefaults :
URxvt*font: 10x20
URxvt*boldFont: 10x20
URxvt*reverseVideo: true
URxvt*color12: #6661ee
URxvt*keysym.M-u: perl:mark-yank-urls:activate_mark_mode
URxvt*perl-lib: /home/kidd/.urxvt/
URxvt*perl-ext: mark-yank-urls
URxvt*underlineURLs: true
URxvt.urlLauncher: firefox