good SSH client?

Do different SSH clients work differently? If so, can someone recommend one that works similarly to telnet as much as possible? Preferably free :)
thanks.

http://www.ssh.com/support/downloads/secureshellwks/

do a search at google for "putty.exe". Very good tool. You can SSH, telnet, rlogin, etc etc into your server and it has some great features. I love fullscreening it :D