Source : Free On-Line Dictionary of Computing

Quintus Prolog
     
         A version of {Prolog} developed by
        {Quintus}.  Development of Quintus Prolog had transferred to
        the {Swedish Institute of Computer Science} by December 1998.
     
        {(ftp://ftp.quintus.com/)}.
     
        Telephone: +1 (800) 542 1283.
     
        [More details?  Features?]
     
        (1998-12-12)