PuTTY is a client program for the SSH, Telnet and Rlogin network protocols.

These protocols are all used to run a remote session on a computer,
over a network. PuTTY implements the client end of that session:
the end at which the session is displayed, rather than the end
at which it runs.

WWW: http://www.chiark.greenend.org.uk/~sgtatham/putty/
