Stunnel :
http://mike.daewoo.com.pl/computer/stunnel/
designed to work as SSL encryption wrapper between remote client and local
(inetd-startable) or remote server. The concept is that having non-SSL aware
daemons running on your system you can easily setup to communicate with
clients over secure SSL channels. stunnel can be used to add SSL
functionality to commonly used inetd daemons like POP-2, POP-3 and IMAP
servers as well as standalone daemons like NNTP, SMTP and HTTP without
changes to the source code.
Latest Version: 3.2 Last Update: May 24, 1999