AbsoluteTelnet - Supports Telnet, SSH v1, SSH v2, SFTP, and serial connections and includes ssh port forwarding, X forwarding, and additional authentication options. Shareware. [Win 95/98/Me/NT/2000/XP/Vista]
AnzioWin - Full-featured telnet client, supporting multiple terminal types, passthrough printing, foreign language support, scripting and SSH. Price information, specifications, ordering and download.
InterSoft International, Inc. - SecureNetTerm provides emulation of a variety of terminals and supports secure file transfer. Commercial and evaluation versions available in multiple languages.
PockeTTY - VT100 terminal emulator. Supports SSH1, SSH2, telnet, and serial connections. Shareware. [WinCE].
Private Shell - SSH client with built-in GUI SFTP client. Supports SSH1, SSH2, telnet, serial connection. Configuration wizard. Both graphical and command-line interfaces. Shareware. [Win32].
PuTTY - Open source SSH client with remote file copying support. [Win32 (Intel and Alpha)]
SecEx - Graphical SCP/SFTP client. Limited version available for download. Online ordering. [Windows]
SecureToken - SSH client also supports telnet, rlogin, and direct COM port accessing. Trial version available for free.
ShellGuard - Command line telnet and SSH client. Trial version available for download.
Silicon Circus - PenguiNet is a shareware telnet and SSH client that supports port forwarding. [Win 9x/NT]