My favourite member of the Logic Programming family of languages would be http://picat-lang.org/ http://picat-lang.org/ . As far as implementations of Prolog go

My favourite member of the Logic Programming family of languages would be http://picat-lang.org/ http://picat-lang.org/ . As far as implementations of Prolog go, http://www.swi-prolog.org/ http://www.swi-prolog.org/ is a good implementation to go with (It's mature, has a good ecosystem, and good documentation).