Windows TCP Relay. This application is a TCP bouncer from ipv* to ipv* (ipv4/ipv6 - ipv4/ipv4 - ipv6/ipv4 - ipv6/ipv6) for Windows NT/2000 and Windows Xp
Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, LDAP, etc) by having Stunn
Wicd is an open source wired and wireless network manager for Linux which aims to provide a simple interface to connect to networks with a wide variety of settings.