PuTTY is a free, open source telnet/SSH client
Author: Simon Tatham Homepage: http://www.chiark.greenend.org.uk/~sgtatham/putty/ Platform: Windows, Unix License: MIT License
PuTTY is a free implementation of Telnet and SSH for Win32 and Unix platforms, along with an xterm terminal emulator. It is written and maintained primarily by Simon Tatham.
Putty includes secure FTP and secure copy as well as telnet and SSH.