NordVPN - NordVPN offers VPN technology that encrypts data twice.
WireGuard - Fast, Modern, Secure VPN Tunnel
OpenVPN - OpenVPN - The Open Source VPN
Pritunl - Pritunl is an open-source enterprise distributed OpenVPN and IPsec server.
SparkLabs - SparkLabs's Viscosity is the OpenVPN client that lets you secure the network.
Cloak VPN - Stay safe online when using untrusted networks