PuTTY is a freeware terminal emulator and SSH client for Windows packed with a lot of useful configuration options. I’m forever mistyping my login name when logging into a server and the only solution when you do this is to close the PuTTY app, start it up again and then try again. To make logins quicker and to save login name mistypes you can specify a auto-login username and then all you need to do is type in the password.