The Shrew Soft VPN Client is a free IPSEC Client for Windows 2000 and Windows XP. It can be used for communicating with a Open Source Operating system running ipsec-tools to provide an alternative to expensive commercial VPN solutions.

It is a Windows based Application which can create unlimited SSH2 based secure tunnels and port forwardings using remote OpenSSH (or any SSH2) server(s). This application is specially designed for Gateways Servers to setup secure LAN to LAN or LAN to WAN, SSH2 encrypted tunnels

If you are looking for how to secure your Internet traffic between two or more offices, ViPNet TUNNEL is the best choice for you. It can be install in minutes and has a 45-days demo trial period, when you can check all required configuration. ViPNet technology has not any complaints on secure issues since it built in 1991.

The program IPTunnelManager is used for IP tunneling with the options for compressing and encrypting traffic. Thus, the program makes it possible to create a secure connection for any application or service using TCP/IP. Data compression provides a significant decrease in the volume of data transferred via the network.

Free for individual use, Tunnelier is a fast, robust, easy to use SSH client for Windows (all versions) with advanced graphical SFTP file transfer and scriptable console-mode SFTP; VT100 and xterm terminals; dynamic and manual TCP/IP tunneling; auto-reconnect feature; single-click Remote Desktop forwarding; FTP-to-SFTP protocol bridge; user authentication with Kerberos (GSSAPI) and public keys. Highly customizable to satisfy special requirements.

WinSSHD is a fast, robust, easy to use SSH server for Windows NT4/2000/XP/2003 with TCP/IP tunneling; SFTP and SCP file transfer; secure login with Remote Desktop or WinVNC; VT100, xterm or bvterm terminal access. Supports Windows groups and domain accounts; public key and Kerberos authentication; virtual accounts; powerful graphical as well as scriptable configuration. Ideal for remote administration, as file server, or for software VPN.

SSH 1+2, reconnect, backup tunnels, integrated firewall, reconfiguration of

MS Internet Explorer and much more

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.
The tunneling capability of SSH Secure Shell is a feature that allows, for example, company employees to access their email, company intraweb pages and shared files securely by even when working from home or on the road.

An open source, cross platform, secure, internet tunneling platform with file transfer, web server, remote admin, proxy, and load balancing. Enables connections through or around firewalls and across sub-networks. No installer is needed - the entire application is a single .EXE configured through an ASCII text file. Complete details at: http://www.UnitedBusinessTechnologies.com/FiveLoaves.html

Secure exchange of messages in a local network Intranet (Windows 95, 98, Me, NT, 2000, XP). The mail (or Email) can be written or read from any PC easily.
Every mail-account can be protected by a password.
The personal messages are always strongly encrypted (with 3 adaptive codes). These short mails are extremely well protected against local hackers and Internet attacks like Trojans or Tunneling-helpers or other applications.