OpenVPN - OpenVPN - The Open Source VPN
PuTTY - Popular free terminal application. Mostly used as an SSH client.
ProtonVPN - ProtonVPN is a security focused FREE VPN service, developed by CERN and MIT scientists. Use the web anonymously, unblock websites & encrypt your connection.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
TunnelBear - Really simple VPN to browse the web privately & anonymously.
iTerm2 - A terminal emulator for macOS that does amazing things.