iSSH!

MobaXterm is an enhanced terminal app that brings the advanced features of a Unix-like command-line to Windows. It takes the power of Cygwin and wraps it in a sleek, visual interface that's super easy to use, lightweight and portable. MobaXterm bundles an X11 server, SSH client and other crucial network tools such as FTP, VNC, RDP, telnet and rlogin, all in a single executable file.

SSH and SFTP client for Windows incorporates:

SSH Proxy can help you turn any remote SSH server into a SOCKS v5 proxy, intuitive and easy to use.

Say Hello to Sidestep

SSH Tunnel allows you to easily manage and precisely control your SSH tunnels.

Looking for a tabbed version of famous PuTTY?PuTTY Connection Manager is a free PuTTY Client Add-on for Windows platforms which goal is to provide a solution for managing multiple PuTTY instances. This is one of the most important missing feature of PuTTY (referring to this and this user complaint)...

gSTM is a front-end for managing SSH-tunneled port redirects. It stores tunnel configurations in a simple XML format. The tunnels (local, remote and dynamic) can be managed and individually started/stopped through one simple interface.

AutoPuTTY is a simple connection manager / launcher

MyEnTunnel is a simple system tray application (or NT service) that establishes and maintains TCP SSH tunnels. It does this by launching Plink (PuTTY Link) in the background and then monitors the process. If the Plink process dies (e.g. connection drops, server restarts or otherwise becomes unreachable) MyEnTunnel will automatically restart Plink to reestablish the tunnels in the background. It tries to use as little CPU and system resources as possible when monitoring (When the "Slow Polling" option is enabled it only does one context switch per second). »

GoAgentx is a proxy management GUI app for Mac OS X that allows you to configure and use goagent, west-chamber-season-3, SSH, stunnel and shadowsocks.

Auto/Shell is a tool for system administrators who want to monitor servers wherever they are in the world. The app lets you add as many servers as you want, and for each one specify a set of commands you want to run over SSH. The app then connects to all the servers and executes all the commands as often as you want, and reports back if any of them return a value that deviates from what you expected.