The inference engine used in PMPro has proved itself over several years of use and enhancement in custom embedded applications. These include knowledge-based simulation systems, multimedia presentation systems with embedded rule-based capability, natural language subsystems and expert systems.

The current release has been enabled for OS/2 named pipes and provided with a new OS/2 PM Graphical User Interface. The components have all been re-designated starting from Version 1.0 despite the main engine's longer history.

See Future releases for a discussion of the future directions of PMPro.