PuTTY
In a nutshell: PuTTY is a free implementation of Telnet, SSH, rlogin, raw TCP, and serial interface connection software.
OpenSSH for Windows
OpenSSH is a free, open-source implementation of the SSH (Secure SHell) protocol. The SSH protocol suite is used for remote control and transferring files between computers. Traditional methods for accomplishing these tasks, such as telnet (terminal emulation protocol), rcp, ftp, rlogin, and rsh, are highly insecure and transmit passwords in plain text.
Xshell 4.0
鈥媂shell is my personal favorite, a powerful secure terminal emulation software that supports SSH1, SSH2, and the TELNET protocol on Microsoft Windows platforms. The newer version 6 has a tab limit, so upgrading is not recommended.
Download link (click “Download Now” under the normal download section):
http://share.cnop.net/dir/1806028-35882880-75bc00
Alternative download:
http://mirror.cnop.net/?dir=