WireGuard - Fast, Modern, Secure VPN Tunnel
PuTTY - Popular free terminal application. Mostly used as an SSH client.
Cisco Anyconnect Secure Mobility Client - Get much more than industry-leading VPN client connectivity. Cisco AnyConnect protects your enterprise resources through a single agent. See how.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
OpenVPN - OpenVPN - The Open Source VPN
iTerm2 - A terminal emulator for macOS that does amazing things.