ProtonVPN - ProtonVPN is a security focused FREE VPN service, developed by CERN and MIT scientists. Use the web anonymously, unblock websites & encrypt your connection.
Tunnelblick - free software for OpenVPN on OS X and macOS
OpenVPN - OpenVPN - The Open Source VPN
TunnelBear - Really simple VPN to browse the web privately & anonymously.
WireGuard - Fast, Modern, Secure VPN Tunnel
Psiphon - Psiphon is circumvention software for Windows and Mobile platforms that provides uncensored access to Internet content. Read more about Psiphon.