Green-forest Framework is the simple IoC Container with Action-Handler architecture. It's not a competitor for Spring Framework or JEE but it's a powerful addition for these frameworks. You can use Green-forest for a single class implementation and for a complex business logic. What is the motivation for using Green-forest with JEE and Spring? The main task is to simplify the code: transfer of one big class (some service implementation) to a set of small classes (handlers).