ProtonVPN Applications are Now 100% Open Source - It's FOSS
Jun 08, 2018 freelan - A VPN client that loves you A VPN client, done right. Freelan is a free, open-source, multi-platform, peer-to-peer VPN software that abstracts a LAN over the Internet. It works on Windows, Linux and Mac OSX. Whether you want to connect the computers of your family, play an old LAN-only game with your friends, or give a privileged access to your private network to your collaborators, freelan will do the job perfectly. 8 Free Open Source VPN - Compatible OpenVPN Client
Like all open source software, these VPN clients have their source code on display for all to see, inspect, and audit. If they contained any major vulnerabilities or security backdoors, we
Jun 08, 2020
OpenVPN is open-source commercial software that implements virtual private network (VPN) techniques to create secure point-to-point or site-to-site connections in routed or bridged configurations and remote access facilities. It uses a custom security protocol that utilizes SSL/TLS for key exchange.
6 open source tools for making your own VPN | Opensource.com