PuTTY

a free ssh/telnet client for Windows and Linux, available at http://www.chiark.greenend.org.uk/~sgtatham/putty/

There are several utilities that you can obtain from that page, which are:

1. PuTTY: the Telnet and SSH client itself
2. PSCP: command-line secure file copy
3. PSFTP: an SFTP client for secure file transfer
4. PuTTYtel: a Telnet-only client
5. Plink: a command-line interface to the PuTTY back ends
6. Pageant: an SSH authentication agent for PuTTY, PSCP and Plink
7. PuTTYgen: an RSA and DSA key generation utility