CLIPS
CLIPS, short for C Language Integrated Production System, is a rule-based programming language and expert system shell developed by Gary Riley at NASA in 1985. It is primarily used for building expert systems, knowledge-based systems, and AI applications in industrial, research, and academic contexts.
Prolog
Prolog, short for Programming in Logic, is a declarative programming language created by Alain Colmerauer and Robert Kowalski in 1972. It is primarily used in artificial intelligence, computational linguistics, expert systems, and symbolic reasoning.