ClusterSHISH for Windows type in multiple SSH windows simultaneously. ClusterSHISH control multiple shells simultaneously on Windows.
Administer multiple ssh sessions from a single input window. ClusterSHISH integrates with PuTTY or any console application and propagates your input to all connected windows, thus providing the easy way to run similar commands on multiple UNIX servers.
It's certainly not a new idea; many UNIX users are accustomed with ClusterSSH, that does almost the same thing on UNIX/X11 environment. Unfortunately, ClusterSSH requires X-server and XTerm, so I've written a replacement tool for Windows.

ClusterSHISH allows you to control multiple ssh sessions from a single input window. It's certainly not a new idea; many UNIX users are accustomed with ClusterSSH, that does almost the same thing on UNIX/X11 environment.

ClusterSHISH works well with console applications, such as OpenSSH for Windows or CMD.EXE or telnet.exe. It also works with PuTTY terminal emulator (in fact, I'm using it with PuTTY most of the time).
Features
Window transparency control with Ctrl+Up, Ctrl+Down (see all your shells through the ClusterSHISH window)
Minimalistic look enabled with Ctrl+Space: only the command entry is visible in this mode
Ctrl+C, Ctrl+D, Ctrl+Z are passed to shell windows
Save history to a file whenever you want
Distinctions from ClusterSSH
Works on Windows, which is its main raison d' tre.
Entire commands are passed to shells, not keystrokes.
Shells are started independently and then tied to running ClusterSHISH instance.
No "close inactive windows" and the like: ClusterSHISH has no way to know whether a session is inactive.

The license of this software is Free Trial Software, the price is $25, you can free download and get a free trial.