Forgot password


Prolog Development Center A/S (PDC)grants and by clicking the "Accept License Agreement" button you accept a license to use the Software and Documentation on these terms. You must return the completed registration card to be eligible for support and updates. 


PDC grants to you a limited, nonexclusive license to

(a) install and operate the copy of the computer software contained in this package ("Software") on a single computer (one central processing unit) AND

(b) make one archived copy of the Software for use with the same computer.

You agree to affix a label to the archived copy, which contains the copyright notice printed on the original disk from which the copy is made.
You may transfer the Software to another single computer PROVIDED no copies of the Software are retained for use on any other computer. The Software may be installed on a network or file server, PROVIDED that you purchase a separate copy of the Software for each computer terminal that will be used to operate the Software.
You agree not to translate, modify, adapt, disassemble, decompile or reverse engineer the Software, or create derivative works based on the Software or Documentation, or any portions thereof except as provided by law. The Software is provided for your personal use or for use in your internal commercial business operations and must remain so.
You may not rent, lease, sublicense or pledge the Software but you may transfer the Software, Documentation and this License Agreement on a permanent basis provided you retain no copies and the recipient agrees to the terms of this Agreement. This License is effective until terminated. This license will terminate automatically without notice from PDC if you fail to comply with any provisions of this license. Upon termination you must cease all use of the Software and Documentation and return them, and any copies thereof, to PDC. PDC retains all rights to the Software not expressly granted in the Agreement. This License shall be governed and construed in accordance with the laws of Denmark.

Using the software

The Software includes the following: example programs, object code, and executable applications. You may embed the object code, example programs into executable applications products that you have developed, and you may distribute such products with such embedded code without royalty to PDC, PROVIDED that you:

(a) embed the code in such a manner as to prevent its extraction or access from your products in a form that would allow it to be embedded in another executable application;
(b) agree to, hold harmless and defend PDC from any claims or lawsuits, including attorney's fees, that arise or result from the use or distribution of your products containing embedded PDC code. You are not allowed to use the software to produce a Prolog interpreter or compiler without written permission from PDC.


This license is not a sale of the original Software or any copies. PDC or its suppliers retains the ownership of the Software and all subsequent copies of the Software, regardless of the form in which the copies may exist. The Software and accompanying manuals ("Documentation") are copyrighted works of authorship and may not be copied, without the express written permission of PDC. Any unauthorized copying is in violation of this License Agreement and may constitute a violation of the Copyright laws in your country.


PDC warrants (a) the media on which the Software is distributed and the Documentation against material defects for a period of 30 days, and (b) the Software will perform substantially in accordance with the description in the Documentation for a period of 90 days. Any implied warranties are limited to 30 days. The warranties commerce on the day you first obtain the Software and extend only to you the original customer. Except as specified above, PDC MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED, REGARDING THE SOFTWARE, MEDIA OR DOCUMENTATION AND HEREBY EXPRESSLY DISCLAIMS THE WARRANTIES OF MERCHANT ABILITY AND FITNESS FOR A PARTICULAR PURPOSE. PDC does not warrant the Software will meet your requirements or that its operation will be uninterrupted or error free. PDC's entire liability and your sole remedy shall be, at PDC's option, either to (a) repair or replace the nonconforming item at no cost to you, or (b) refund your money, provided you return the item, with proof of the date you obtained it, to PDC no later than 10 days after the expiration of the applicable warranty period. Any replacement item will be warranted for the remainder of the original warranty period. If PDC determines that the particular item has been damaged by accident, abuse, misuse or misapplication, has been modified without the written permission of PDC, or if any PDC label or serial number has been removed or defaced, the warranties set forth above do not apply and you accept full responsibility for the product. PDC or anyone involved in the creation or delivery of the Software or Documentation to you shall have no liability to you or any third party for special, incidental, or consequential damages arising from claims based in warranty, contract, tort (including negligence), strict tort, or otherwise even if PDC has been advised of the possibility of such claim of damage. PDC's liability for direct damages shall not exceed the actual amount paid for the product. Some countries/states do not allow the exclusion or limitation of implied warranties or liability for incidental or consequential damages, so the above limitations or exclusions may not apply to you.

Questions and problems: sales@visual-prolog.com