XShell from NetSarang is a great SSH client that we use. Even one awhile, you might wanna back up all the saved profiles.
The profiles are actually located at: %user_profile%\%username%\AppData\Roaming\NetSarang\Xshell. For example, C:\Users\johnny\AppData\Roaming\NetSarang\Xshell.
You can just copy the directory to where you want to back it up. You can also create sub-directories if you want to manage them a bit.