Visual Prolog 9 Personal EditionWe offer you an opportunity to learn Visual Prolog by using a free Personal Edition.
The Personal Edition has a limited library support compared to the Commercial Edition, and it may only be used privately for learning Visual Prolog.The Personal Edition is free, has no time or session restrictions, and can be downloaded. For long term use it must be registered.
Visual Prolog 9 Commercial EditionThe Commercial Edition contains everything from the Personal Edition plus help generator tool, extra library support, COM support, ISAPI support, multithreading, ODBC, Sockets, pipes and many extra GUI controls. See a list of the differences between the Commercial and Personal Editions of Visual Prolog.
You have to purchase the Commercial Edition if you want to use Visual Prolog commercially. If you need more than 10 licenses please contact firstname.lastname@example.org for an individual offer, otherwise you can buy online.