SSH:TDG
SSH: The Secure Shell (The Definitive Guide)
Barrett, Silverman, & Byrnes / O’Reilly

Table of SSH Implementations

name Unix Windows Macintosh client server free SSH-1 SSH-2
SSH Communications Security x x   x x   x x
OpenSSH
Windows support is command-line (non-GUI) and requires Cygwin
x x   x x x x x
LSH x     x x x   x
F-Secure SSH
formerly Datafellows
x x x x x   x x
PuTTY   x   x   x x x
Okhapkin's port of SSH1
requires Cygwin
  x   x x x x  
SecureCRT, SecureFX
  x   x     x x
VShell
SSH-2 server for Windows
  x     x     x
MacSSH
by Jean-Pierre Stierlin, based on BetterTelnet and lsh
    x x   x   x
TeraTerm   x   x   x x  
MindTerm
written in Java; can run as a web browser applet
x x x x   x x x
NiftyTelnet 1.1 SSH
by Jonas Walladén, based on NiftyTelnet by Chris Newman
    x x   x x