Drools

A set of projects for intelligent automation and decision management — a forward-chaining and backward-chaining inference-based rule engine, a DMN decision engine, and more.

Rule engine

A forward-chaining and backward-chaining inference-based rule engine — the building block of an expert system, a program that emulates the decision-making of a human expert. Write rules in DRL.

DMN engine

Full runtime support for Decision Model and Notation models at Conformance level 3: every feature in the OMG standard.

CEP engine

Complex Event Processing: reason over streams of events in the same engine — temporal operators, sliding time and length windows, and event expiration.