"AB") &: (neq ?name ?name2) )) => (printout t ?name " can give blood to " ?name2 crlf) ) ;(watch all) (reset) (run) See also JSR-94 Decision Model and Notation Related systems CLIPS: public domain software tool for building expert systems. ILOG rules: a business rule management system. JBoss Drools: a business rule management system (BRMS). Prolog: a general purpose logic programming language. OpenL Tablets: business centric rules and BRMS. DTRules: a decision table based, open-sourced rule engine for Java. References Additional sources External links Official Website Expert systems Rule engines Knowledge representation languages Java APIs Sandia National Laboratories