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