Simple is a lightweight, high performance XML serialization and configuration framework that uses annotations to describe the XML structure of an object. It enables full object serialization and deserialization handling reference cycles seamlessly. The XML annotation framework provided enables existing POJOs to be serialized and deserialized without the need to write and maintain a mapping file or compile an XML schema. There is just your code, annotated, nothing else. home: http://simple.sourceforge.net/ The release focus for 1.3.1 was to handle object instance deserialization which allows an existing instance to have deserialized XML objects injected either through annotated methods or annotated fields. Also support for read resolve and write replace has been added.