What is 'JRules'?
JRules is a "Business Rule Management System" from ILOG. That means it is an environment for managing and deploying business rules. JRules supports the development of rule-based applications and allows business users to contribute their knowledge through rule management. For example, business policy can be separated from application logic and therefore updated independently, without the need to look deep into the application logic.
JRules provides a graphical rule development environment, with an editor and debugger for tracing logic and detecting errors and inconsistencies. There is also a Business Rule Execution Server that integrates JRules into a J2EE server environment.
You can find out more about JRules from the ILOG website