[comp.ai.digest] Prolog shopping

cugini@ICST-ECF.ARPA (10/14/87)

I'm doing some serious shopping for an industrial strength Prolog
to run under VAX/VMS.  The only vendors of which I am aware are:
1. Quintus
2. IF/Prolog (Munich Germany)
3. Prolog-1 from Expert Systems International

Desirable features include:
1. nice environment/editor for changing and testing
2. external DB - preferably based on SQL
3. ability to call external languages, eg FORTRAN routines.

I'd be happy to hear about any new products, assessments, suggestions, etc.

John Cugini  <Cugini@icst-ecf.arpa>
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