OpenVPN GUI -- A Windows GUI for OpenVPN Copyright (C) 2004-2005 by Mathias Sundman OpenVPN GUI is distributed under GPL license. (see COPYRIGHT.GPL) Parts of the source code for OpenVPN GUI is taken from openvpnserv.c included with the OpenVPN [1] distribution. [1] OpenVPN is copyrighted by OpenVPN Solutions LLC , and distributed under GPL license.