Prolog Development Center offers 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.
Visual Prolog 7.3 Commercial Edition
The 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.
Visual Prolog Commercial Edition costs €299. If you need more than
10 licenses please contact Prolog Development Center
for an individual offer, otherwise you can simply make you order
online.
Upgrade from Previous Versions of Visual
Prolog Commercial Edition
Owners of Visual Prolog 7.2, who purchased Visual Prolog Commercial Edition license a month
before Visual Prolog 7.3 release date or later, can upgrade freely to Visual Prolog 7.3 Commercial
Edition.
Other owners of Visual Prolog 7.2 Commercial Edition can upgrade to Visual Prolog 7.3 for
€149.
Otherwise the price is €299.
To check whether your are eligible for upgrade discounts and to order the latest public build
of Visual Prolog 7.3 Commercial Edition with an appropriate discount, please, use the
WEB|Check For Update menu item from your Visual Prolog Integrated
Development Environment (IDE).
Migration Tool
The Migration Tool is an assistant for
migrating a Visual Prolog 5.x project into Visual Prolog 6.x projects.
