Drools is an enhanced Rules Engine implementation based on the ReteOO algorithm, an algorithm adapted from the one originally devised by Charles Forgy. Drools has become quite popular due to performance characteristics and it’s natural language semantic
JBoss Seam is a "lightweight framework for Java EE 5.0". What does that mean? Isn't Java EE (Enterprise Edition) 5.0 itself a collection of "frameworks"? Why do you need another one that is outside of the official specification? Well, we view Seam as the
JBoss Seam is an application framework for Java EE 5. Seam unifies the component models of JSF and EJB 3.0, providing a streamlined programming model for web-based enterprise applications. Very interesting!