[1-7] Commercial Object-Oriented Systems for Prolog

LAP is an object-oriented system by Elsa. For more information, write
to Elsa Software, La Grange Dame Rose, 6 ave du Marechal Juin, 92366
Meudon-La-Foret Cedex, France, call +33 (1) 46 30 24 55, fax +33 (1)
46 30 55 26, or send email to elsa!lap@uunet.uu.net.

SPIRAL is an object oriented system by CRIL for Sun3 and Sun4 under
Unix. For more information, write to CRIL, Conception et Realisation,
Industriel de Logiciel, 146 bd de Valmy 92707, Colombes Cedex, France,
call +33 1 47 69 53 67, or fax +33 1 47 69 53 99.

See also LPA Prolog ++ in [2-2].