Open Source ClusterSSH Alternatives
ClusterSSH is described as 'controls a number of xterm windows via a single graphical console window to allow commands to be interactively run on multiple servers over an ssh connection'. There are more than 10 alternatives to ClusterSSH for various platforms. The best alternative is PuTTY, which is both free and Open Source. Other great apps like ClusterSSH are cPuTTY 2 (Free, Open Source) and cPuTTY (Free, Open Source).