NordVPN - NordVPN offers VPN technology that encrypts data twice.
Firezone - Firezone is a remote access platform that’s painless to deploy, easy to manage, and built on WireGuard® to be blazing fast. Best of all it's self-hosted and open-source.
TunnelBear - Really simple VPN to browse the web privately & anonymously.
fruho - fruho is an open-source, zero-configuration VPN manager.
OpenVPN - OpenVPN - The Open Source VPN
Viscosity - Viscosity is a VPN client for Mac OS X and Windows.