JAVA XMI

1.JMI
http://java.sun.com/products/jmi/implementations.html
2.AndroMDA: implements JMI
http://www.andromda.org

3.EMF: Eclipse

4.ArgoUML: support JMI
http://argouml-downloads.tigris.org/nonav/argouml-0.32/manual-0.32.pdf