MyEnTunnel
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).
This program is called My-En-Tunnel (My Encrypted Tunnel). Not MyEtunnel, Entunnel or Etunnel.
After looking for a simple windows SSH tunnel daemon and not finding anything to my fancy I ended up writing this.
http://nemesis2.qx.net/software-myentunnel.php