Tunnelblick - free software for OpenVPN on OS X and macOS
MobaXterm - MobaXterm is a software that uses a set of optimized network tools included in a single exe file. MobaXterm integrates several network clients with an X server, and also integrates a full set of Unix based commands. Read more about MobaXterm.
OpenVPN - OpenVPN - The Open Source VPN
KiTTY - KiTTY is a fork from version 0.70 of PuTTY. It adds extra features to PuTTY.
WireGuard - Fast, Modern, Secure VPN Tunnel
ConEmu - ConEmu-Maximus5 is a full-featured local terminal for Windows devs, admins and users. Get better console window with tabs, splits, Quake style, copy+paste, DosBox and PuTTY integration, and much more.