[comp.lang.prolog] Recommended Prologs for Mac

turpin@cs.utexas.edu (Russell Turpin) (12/21/90)

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I would like to play around with Prolog on my MacPlus.  What 
products do people recommend?  My priorities are:

   (1)	It must work, and be at least the usual Prolog. 
   (2)	It must be free or cheap.
   (3)	Speed of execution.
   (4)	Ease of use.

Thanks for all responses.

Russell