Some similar or related projects:
Open Symphony's WebWork2 http://www.opensymphony.com:8668/space/WebWork2
JBoss's AOP framework http://www.jboss.org/index.html?module=html&op=userdisplay&id=developers/projects/jboss/aop
Open For Business's Service Engine http://ofbiz.org/core/docs/services.html
Jakarta Commons HiveMind http://jakarta.apache.org/commons/sandbox/hivemind/
PicoContainer & NanoContainer http://www.picocontainer.org/ http://www.nanocontainer.org/
Fractal http://fractal.objectweb.org/
Also see the listings on the Avalon website: http://avalon.apache.org/related/index.html