Whonix is an anonymous operating system. Whonix-Gateway is a Tor-Gateway, which routes all its clients traffic through the Tor anonymity network.
Whonix Physical Isolation users might who are also interested in Raspberry Pi might be happy to hear, that there is some progress documenting how to use RP to host Whonix-Gateway.
An anonymous user posted instructions in Whonix Forum, in case you're interested, see:
Log in to post a comment.