Tunnelblick is a popular free OpenVPN client for Mac. It’s been around a long time, is still being updated, and is a breeze to use. This post has a video tutorial that walks you through the process of setting up Tunnelblick so that you can quickly and easily access Ghost Path’s VPN servers.
How to install and configure Tunnelblick to work with Ghost Path servers
Here’s the full list of Ghost Path VPN servers. You can click the OpenVPN link for any of those servers to download a pre-config’d OpenVPN file to easily import into Tunnelblick.