Logic Programming Associates Ltd, LPA, is a leader in applied Artificial Intelligence and Decision Support software. LPA was founded in 1981 to exploit research into Logic Programming at Imperial College under Prof Bob Kowalski. LPA has, since then, produced a series of expert systems and knowledge-based systems tools and solutions for Windows PCs and the web. LPA is the developer of VisiRule - a graphical decision modeling tool which allows organizations to capture and automate complex decisions and deliver them as expert systems and business rules applications. VisiRule allows authors to graphically organize, share, discuss, negotiate, agree knowledge and deliver it in the form of executable rules-based systems.