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PuTTY is a free implementation of Telnet and SSH for Windows and Unix
platforms, along with an
xterm terminal emulator. It is
written and maintained primarily by
The latest version is beta 0.60.
LEGAL WARNING: Use of PuTTY, PSCP, PSFTP and Plink is illegal in countries where encryption is outlawed. I believe it is legal to use PuTTY, PSCP, PSFTP and Plink in England and Wales and in many other countries, but I am not a lawyer and so if in doubt you should seek legal advice before downloading it. You may find this site useful (it's a survey of cryptography laws in many countries) but I can't vouch for its correctness.
Use of the Telnet-only binary (PuTTYtel) is unrestricted by any cryptography laws.
2010-05-17 Google listing confusion
Several users have pointed out to us recently that the top Google hit for "putty" is now not the official PuTTY site but a mirror that used to be listed on our Mirrors page.
The official PuTTY web page is still where it has always been:
2007-04-29 PuTTY 0.60 is released
PuTTY 0.60 is out, containing mostly bug fixes.
2007-01-24 PuTTY 0.59 is released
PuTTY 0.59 is out (finally!), and as previously announced we no longer provide Alpha binaries.
2006-03-31 Proposed withdrawal of Alpha NT PuTTY
From the next release, we propose to stop providing binaries for PuTTY on Windows NT on the Alpha processor. Our own original need for PuTTY on Alpha NT has gone, and our logs suggest that nobody else now uses it. If this is a problem for you, let us know.