For instance, with this program, you can connect a Windows PC to a Linux system. PuTTY for Windows is a terminal application to connect machines running different operating systems. Cross-platform support for Windows and Linux Moreover, PuTTY is an excellent choice for creating a secure SSH tunnel handling X11 web traffic. With PuTTY, you can initiate safe file transfers via SFTP, SCP, telnet, SSH, and rlogin. However, the configuration options can be difficult to manage, especially for beginners. With multiple customisation options, PuTTY for Windows lets you configure different settings to suit your preferences. Developers use this SSH client to connect a Windows computer to a Linux system. PuTTY is a free-to-use, open-source, and easy-to-use terminal application.