PuTTY is by far the most lightweight and handy SSH client available for free. As a freeware application, it is also extremely portable. If you're at a friend's house, for example, and you need to access your server for any reason, PuTTY is the best client to download without any hassle.
PuTTY is highly recommended for any administrator or anybody who needs an SSH or Telnet client quick. It supports both SSH and SSH2 and is a free download.Compability and license
PuTTY is licensed as freeware for the Windows (32-bit and 64-bit) operating system / platform from ssh/telnet clients without restrictions. PuTTY 0.70 is available to all software users as a free download (Freeware).
Compatibility with this telnet client software may vary, but will generally run fine under Microsoft Windows 10, 8, 8.1, 7, Vista and XP on either a 32-bit or 64-bit setup. A separate x64 version may be available from sgtatham. This download is distributed as putty.exe.
We have tested PuTTY 0.70 against malware with several different programs. We certify that this program is clean of viruses, malware and trojans.