Internet Secure Tunneling can forward otherwise insecure TCP traffic through encrypted SSH Secure Shell tunnel. You can secure for example DATABASE, POP3, SMTP and HTTP connections that would otherwise be insecure.
Server-less and peer to peer VPN based on NAT traversal (RFC-3489). VNN is useful for the users in different branch offices to use their LAN based applications across the Internet without requiring them to reconfigure their routers or firewalls.
wodVPN is VPN peer-to-peer ActiveX component that is used to establish Virtual Private Network between two peers. All P2P communication is encrypted and secured. Peers are able to forward local and remote ports, send messages, etc.