Tunnelblick is a free, open source Graphic User Interface (GUI) for OpenVPN on Mac OS X. It provides easy control of OpenVPN connections.
Tunnelblick runs on OS X Tiger (10.4) and up and comes as a ready-to-use Universal application with all necessary binaries and drivers (including OpenVPN and tun/tap). No additional installation is necessary -- just add your configuration and encryption information.
There are no reported vulnerabilities