PuTTYcompatible

PuTTYcompatible refers to software that adheres to or closely mimics the behavior of PuTTY, the widely used SSH and terminal emulation client originally for Windows. In practice, PuTTYcompatible programs aim to provide a similar user experience, protocol support, and, in some cases, session management features that align with PuTTY’s conventions.

The scope of PuTTYcompatibility typically includes SSH client functionality, and often also other remote access protocols supported by PuTTY such as Telnet and rlogin. It may also involve emulating PuTTY’s terminal behavior and key handling so that terminal interactions, escape sequences, and display characteristics are consistent with PuTTY. Some implementations go further by reusing PuTTY’s session concepts, key formats, or command-line interfaces, while others simply strive for interoperability with PuTTY users’ expectations and configurations.

Implementation approaches vary. Some software are direct forks or derivatives of PuTTY (for example, KiTTY), designed to remain compatible with PuTTY’s session flow and key handling. Others are independent clients that explicitly advertise PuTTY compatibility to indicate they can connect to the same servers and use similar workflows, even if they do not share code. In all cases, PuTTYcompatibility is about ensuring reliable SSH connections and a familiar terminal experience for users accustomed to PuTTY.

Limitations exist, as there is no formal standard named “PuTTYcompatible.” Compatibility can differ on features, keyboard mappings, or session management. Related concepts include SSH, PuTTY itself, and tools in the PuTTY ecosystem such as PLINK and PSCP.