http://www.wfmc.org/
http://bonita.objectweb.org/
http://jawe.Objectweb.org/
http://shark.objectweb.org/
http://www.huihoo.org/willow/index.html
http://www.ofbizchina.com:8080/ofbizcn/control/main
http://javafox.vip.myrice.com/workflow/index.html
