org.kie.kogito:drools (maven):  Drools Expert is the rule engine and Drools Fusion does complex event processing (CEP). 
Keywords: bpm|bpmn|cloud-native|cmmn|dmn|drools|hacktoberfest|java|knative|kogito|pmml|quarkus|rule-engine|serverless-workflow|spring-boot|workflow|workflow-engine