From: Rajagopal Swaminathan raju.rajsand@gmail.com
not sure, but cssh perhaps? http://sourceforge.net/projects/clusterssh/
tmux is a bit too screen like for me (very powerful but needs to know many key combinations). But it would be useful in a non graphical environment... pconsole works but needs root or suid. clusterssh is like keyboardcast with extras (windows tiling, servers groups...), but a lot less reactive... So I went with clusterssh just for the ease of use.
Thanks to all for the suggestions, JD