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PuTTY is a free implementation of SSH and Telnet for Windows and Unix
platforms, along with an xterm terminal emulator. It is
written and maintained primarily by
Simon Tatham.
The latest version is 0.85. Download it here.
LEGAL WARNING: Use of PuTTY, PSCP, PSFTP and Plink is illegal in countries where encryption is outlawed. We believe it is legal to use PuTTY, PSCP, PSFTP and Plink in England and Wales and in many other countries, but we are not lawyers, and so if in doubt you should seek legal advice before downloading it. You may find useful information at cryptolaw.org, which collects information on cryptography laws in many countries, but we can't vouch for its correctness.
Use of the Telnet-only binary (PuTTYtel) is unrestricted by any cryptography laws.
2026-08-16 The putty-announce mailing list is discontinued
We're sorry to announce that we're retiring the putty-announce mailing list. After 0.85 (released today), we will no longer be announcing new versions of PuTTY by email.
As a replacement announcement mechanism, we've set up an RSS feed.
This is because running an announcement mailing list was becoming costly to our email reputation. Users would subscribe their work address to it; leave the company without remembering to unsubscribe; and then after a few months the company would turn its ex-employee's address into a spamtrap.
2026-08-16 PuTTY 0.85 released
PuTTY 0.85, released today, fixes multiple security issues. The most potentially dangerous one affects Pageant, if anyone malicious can access it over SSH agent forwarding.
2026-05-22 PuTTY 0.84 released
PuTTY 0.84, released today, fixes multiple security issues (minor as far as we know), several bugs, and has the new features of running a pre-connection command and (on Unix) displaying partially composed Unicode characters as you type them.
2025-08-14 New website, putty.software
We have a new domain name for the PuTTY website!
putty.software is now a nice, short, easy-to-remember location that you can type into a browser from memory.
At present it only contains a small landing page, which will redirect you back to the main site here on chiark. In future we plan to move the whole website to the new domain.
Unlike other landing pages, this one is run by the PuTTY team itself, and not by a third party with their own agenda.