Visual Prolog Personal Edition

We offer you an opportunity to learn and use Visual Prolog by using a free Personal Edition.

The Personal Edition may not be used for commercial products.

For long term use it must be registered.

Visual Prolog Commercial Edition

The Commercial Edition is necessary to use Visual Prolog for commercial products.

Furthermore, the Commercial Edition contains some deprecated legacy library entities, which may be needed for updating and compiling older projects:

Various vpi controls
chainDB database
webBrowser control (superseded by the Microsoft Edge webView2 control)
certain WEB server technologies (CGI, ISAPI) (superseded by the Web Services support)