OpenVPN is an open source VPN daemon
OpenVPN GUI is a graphical frontend for OpenVPN running on Windows (10 and 11). It creates an icon in the notification area from which you can control OpenVPN to start/stop your VPN tunnels, view the log and do other useful things.
OpenVPN 3 is a C++ class library that implements the functionality of an OpenVPN client, and is protocol-compatible with the OpenVPN 2.x branch.
Simple GTK indicator GUI for OpenVPN 3 Linux