Free Usage Software

From this page, you can download a fully-working copy of PROLOG Professional, LPA's first ever Prolog compiler, provided it is used only for personal purposes or study.

Based on the historic 8-bit and 16-bit implementations of micro-PROLOG, PROLOG Professional used a revolutionary combination of incremental and optimized compilation to provide interpreter-like flexibility, but with the speed of compiled code.

Now superseded by LPA's 32-bit Prologs, PROLOG Professional has been released to the public domain for non-commerical uses. It is ideal for HP Palmtops and other 16-bit DOS machines, but will run equally happily in the DOS boxes of most versions of Windows.

To obtain your free usage software, please select the following link: