Expert System Shells

areas/expert/systems/

   babylon/   BABYLON: Development environment for expert 
              systems.
   clips/     CLIPS: C Language Integrated Production System
   es/        ES: A Public Domain Expert System
   esfm/      ESFM: Prolog Expert System for Forestry 
              Management
   esie/      ESIE and Logic-Line: Expert System Shell and AI 
              Retrieval/Correlation Tool.
   expert/    Expert: An expert system written in ADA.
   frulekit/  FRulekit: Frame-based RETE production system.
   hugin/     HUGIN Expert System: Demo versions for Solaris, 
              Sun4, and Windows
   les/       LES: Learning Expert System
   mike/      MIKE: Free and portable expert system teaching 
              system.
   ops5/      OPS5: RETE-based expert system shell.
   salvini/   PROTEST: Prolog Expert System Building Tool