WireGuard - Fast, Modern, Secure VPN Tunnel
NordVPN - NordVPN offers VPN technology that encrypts data twice.
Pritunl - Pritunl is an open-source enterprise distributed OpenVPN and IPsec server.
TunnelBear - Really simple VPN to browse the web privately & anonymously.
OpenVPN - OpenVPN - The Open Source VPN
Tunnelblick - free software for OpenVPN on OS X and macOS