Windows & Mac

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• PuTTY is an SSH1+SSH2 implementation. PSCP, an scp-style program for Windows, is also available.
  PuTTY is available under the MIT licence (BSD-like). Putty's SSH2 mode does not contain support for user authentication with DSA keys.

  "PuTTY is a free implementation of Telnet and SSH for Win32 platforms, written and maintained primarily by Simon Tatham, who lives Great Britain."

• TTSSH (SSH1) is an SSH1-only implementation, by Robert O'Callahan.

  "TTSSH is a free SSH client for Windows. It is implemented as an extension DLL for Teraterm Pro. Teraterm Pro is a superb free terminal emulator/telnet client for Windows, and its source is available. TTSSH adds SSH capabilities to Teraterm Pro without sacrificing any of Teraterm's existing functionality. TTSSH is also free to download and use and its source is available too, with an open source license. Furthermore, TTSSH has been developed entirely in Australia [...]."

• Telneat (SSH1) is a telnet/SSH client for Windows created by Kosta Schegloff

  "offering the following features:

  • full telnet support
  • full SSH support (IDEA, DES, TripleDes, ArcFour, BlowFish, compression)
  • full termcap support
  • supports Win95, OSR2, Win98, WinNT, Win2000
  • supports external SSH encryption plugins
  • up to 10 consoles
  • mouse driven cut-and-paste feature
  • scroll buffer feature
  • autologin feature
  • configurable recode tables
  • independent config for each host"

• NiftyTelnet 1.1 SSH is an SSH1-only implementation which comes with a scp-style program. Written by Jonas Wallden.

  "NiftyTelnet 1.1 SSH r3 is an enhanced version of Chris Newman's NiftyTelnet 1.1 application which adds support for encrypted terminal sessions using the SSH (Secure Shell) protocol. Please read the included Readme file before distributing this version."

• MacSSH is an SSH2-only implementation.

  "MacSSH is a modified version of BetterTelnet with SSH2 support. [...] The only SSH2 client for MacOS that I could find is a commercial product thats costs more than $100, and it crashes my Mac when closing a session... Since it's best to do things by oneself, here's MacSSH."