The microcontainer is said to let developers work on applications without being locked into any particular programming language or component model. Users will find support for POJO, Spring Framework, OSGi, Google Web Toolkit and others. The microcontainer is said to let developers work on applications without being locked into any particular programming language or component model. Users will find support for POJO, Spring Framework, OSGi, Google Web Toolkit and others. The intention is that, with the microcontainer sitting on the JVM, as the programming language or component models of the times change, developers will not have to tear down their infrastructures to keep up. http://searchsoa.techtarget.com/news/article/0,289142,sid26_gci1366941,00.html