Apache Cocoon is a major rewrite of Cocoon 2.2. Like Cocoon 2 it is based around the concept of pipelines and sitemaps and it is very similar to Cocoon 2.2 in many respects but is slimmed down and designed to be easily used with Java code (= no frameworks required!). On top of this, Cocoon 3 has the goal of becoming the best available platform for RESTful webservices and web applications.
Platform: Linux;License: Apache
Reference: https://cocoon.apache.org/3.0/