PuTTY There is no official definition of “PuTTY.” Still, the term is commonly used as an application for both SSH and telnet and includes an xterm terminal emulator, and PuTTY is an alternative to telnet clients. PuTTY is primarily written and maintained by Simon Tatham, a British programmer for the Windows platform. PuTTY is open-source software available with source code and is developed and supported by a group of volunteers. It is also a terminal emulator, serial console, and network file transfer software free and open source. Its primary advantage is that SSH provides a secure and encrypted connection to the remote system. It is also tiny, self-contained, and can be carried on a floppy disk. This makes it ideal for safely accessing Sussex systems from other sites on the public internet.
PuTTY was originally written for the Microsoft Windows operating system but has since been ported to many other operating systems. Official ports are available for some Unix-like platforms, with ports in operation to Classic Mac OS and macOS. Unofficial ports have been contributed to platforms such as Symbian, Windows Mobile and Windows Phone. Since version 0.53 also supports cross-printing feature for VT100 terminals.
SCP, SSH, Telnet, login, and primary socket connections are among the network protocols it supports. It also can connect to a serial port. You will find PuTTY useful if you want to access a Unix account or any other multi-user system from a computer (for example, your own or an internet café).
This includes users of the central ITS Unix system and the Unix systems provided by some schools and other units. The central ITS Unix system supports the use of SSH clients. Users of other systems should ask their system administrator if SSH is supported.