ngrok - ngrok enables secure introspectable tunnels to localhost webhook development tool and debugging tool.
ProtonVPN - ProtonVPN is a security focused FREE VPN service, developed by CERN and MIT scientists. Use the web anonymously, unblock websites & encrypt your connection.
Pinggy.io - Public URLs for localhost without downloading any binary
OpenVPN - OpenVPN - The Open Source VPN
Pagekite - Bring your localhost servers on-line.
TunnelBear - Really simple VPN to browse the web privately & anonymously.