Radmin VPN – is a free and easy-to-use software product to create virtual private network (VPN). The program allows users to establish a secure connection between computers over the Internet as if they were connected over a LAN.
GUI for secure VPN connections
Auto-establish a VPN connection when AirPort is available
Graphical user interface for VPNC, the open source Cisco VPN client
DiskLogon adopts the latest authentication technologies, allowing you to use your memory card or USB Pen Drive to log on to your computer.
Amrita VPN is an easy-to-use open source VPN solution that runs on the GNU/Linux platform.