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.
Oast - OAST is a cross-platform front-end (GUI) for OpenVPN-client, allowing to manage multiple.
OpenVPN Manager - OpenVPN Manager is a tool which controls OpenVPN.
Viscosity - Viscosity is a VPN client for Mac OS X and Windows.
Tor Browser - Tor is free software for enabling anonymous communication.
Tunnelblick - free software for OpenVPN on OS X and macOS