Jess

JESS (Java Expert System Shell) is a software tool that helps programmers develop systems capable of mimicking human decision-making. Built in Java, it allows you to create rules and facts—like a knowledge base—that the program uses to infer new information or solve problems. Think of it as a digital "if-then" engine: when certain conditions are met, it triggers specific actions. JESS is often used in expert systems, like medical diagnosis tools or troubleshooting programs, enabling machines to reason and make decisions based on the rules and data provided.