did prolog have any children that lived?

From: alex goldman (hello_at_spamm.er)
Date: 03/26/05


Date: Sat, 26 Mar 2005 09:48:43 -0800

A 10+ year old book I'm reading mentions MU-prolog, NU-prolog and Prolog III
as more declarative possible successors to Prolog. I wonder what became of
them?