I was leafing through Lincoln Stein's "Network Programming with Perl" (2001 edition), and found something not mentioned in the Wikipedia article about ELIZA.
There is a Perl clone: https://metacpan.org/pod/Chatbot::Eliza Yay! Something new to play with!
PS: (command line - wondering if anyone has created a web interface already. Probably. If not, anyone care to take a stab at it?)