There are some differences from Putty as yet, though I am sure it is all a work in progress.
I tried using it to perform an ssh. After I filled in all the details and asked it to Open,
the window asked me only for the password and not the username.
It assumed my current login as the username. Can that be changed ?
I tried Putty on Windows and it gives me the option to provide both the user-id and password.
In the "Hostname or IP address" field enter username@hostname to change the username you want to login as.