For last couple of years I’ve used my own shell script based solution to list and open ssh connections. Now I found a nice applet called SSHMenu:
The SSHMenu is a panel applet that makes all your regular SSH connections a single mouse click away. Each menu option will open an SSH session in a new terminal window. You can arrange groups of hosts with separator bars or sub-menus. You can even open all the connections on a submenu (in separate windows or tabs) with one click.
Overall I'm quite happy with SSHMenu, a must have tool for all admin, IMHO.
a] SSHMenu allows you to add key so that you can run rest of the all session without a problem and password.
b] Every connection you make using using SSHMenu will use the terminal profile you've selected, to set the color scheme, terminal font and other settings.
c] You can open all connection at a time and much more...