FireCMD - FireCMD is regarded as enhanced command line environment for Windows platforms that makes actually interacting with the computer both powerful and user-friendly.
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.
Windows Terminal - A new command line interface for Windows machines
Viscosity - Viscosity is a VPN client for Mac OS X and Windows.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
Tunnelblick - free software for OpenVPN on OS X and macOS