PuTTY is a graphical terminal client and terminal emulator for accessing remote computers. Although the software originated on Windows, it also runs on Unix platforms including Linux and provides the familiar PuTTY configuration interface together with its terminal window.
SSH is its most important protocol, but PuTTY can also handle several older or specialist forms of terminal connection. Configuration can be saved as named sessions, making it easy to retain host, terminal, proxy, authentication and forwarding settings for systems that are accessed repeatedly.
This is free and open source software.
Key Features
- Supports SSH, Telnet, Rlogin, SUPDUP, raw network connections, serial connections, and bare SSH connection sessions.
- Save named sessions containing host details and detailed connection, terminal and authentication settings.
- Public-key authentication with integration with PuTTYgen for creating and converting SSH key material.
- Pageant authentication agent can hold private keys and make them available to PuTTY and other compatible clients.
- Local, remote and dynamic SSH port forwarding together with X11 forwarding support.
- Proxy support for reaching remote systems through intermediate HTTP, SOCKS and Telnet-style proxy servers.
- Control terminal emulation behaviour including keyboard handling, colours, character sets, scrollback and window settings.
- Session logging can record terminal output, printable output, or SSH packets for later inspection.
- Includes command-line companions such as Plink for remote commands, PSCP for secure copying, and PSFTP for interactive file transfer.
- Can run a command before establishing the network connection, useful for tasks such as Wake-on-LAN or port knocking.
- Supports modern SSH cryptography and continues to receive security fixes for the SSH client, key tools and authentication agent.
Website: www.chiark.greenend.org.uk/~sgtatham/putty
Support:
Developer: Simon Tatham
License: MIT License

PuTTY is written in C. Learn C with our recommended free books and free tutorials.
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