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Apache Beehive - http://incubator.apache.org/beehive/ SDO - http://www-106.ibm.com/developerworks/library/j-sdo/ DOM4J - http://www.dom4j.org/ Spring - http://www.springframework.org/ Cocoon - http://xml.apache.org/cocoon/index.html Spring - http://www.springframework.org/ Cocoon - http://xml.apache.org/cocoon/index.html WebApp Framework - http://webapp.de/en/ Arch4J - http://arch4j.sourceforge.net/ JSF - http://java.sun.com/j2ee/javaserverfaces/index.jsp Struts - http://struts.apache.org/ Tapestry - http://sourceforge.net/projects/tapestry WebWork - http://www.opensymphony.com/webwork Echo - http://www.nextapp.com/products/echo Expresso - http://www.jcorporate.com/html/products/expresso.html Jade - http://sourceforge.net/projects/salmon JOT Servlets Framework - http://www.jotobjects.com/ JUnit - http://www.junit.org/index.htm Castor - http://www.castor.org/ Hibernate - http://www.hibernate.org/ OJB - http://db.apache.org/ojb/ JDO - http://java.sun.com/products/jdo/ O/R Broker - http://orbroker.sourceforge.net/ Cayenne - http://objectstyle.org/cayenne/ O/R Broker - http://orbroker.sourceforge.net/ Cayenne - http://objectstyle.org/cayenne/ Jena - http://jena.sourceforge.net/ Framework for Java Database Connectivity - http://www.alphaworks.ibm.com/tech/framework4jdbc Grid Application Framework for Java - http://www.alphaworks.ibm.com/tech/GAF4J Java 2 Collections - http://java.sun.com/j2se/1.4.2/docs/guide/collections/ Avalon - http://jakarta.apache.org/avalon/index.html Cactus - http://jakarta.apache.org/cactus/index.html Turbine - http://jakarta.apache.org/turbine/index.html JPOPS - http://jpos.org/ A Java framework for GPS - http://www.aasted.org/gps/ MyFaces - http://incubator.apache.org/projects/myfaces.html Sun Java Media Framework - http://java.sun.com/products/java-media/jmf/index.jsp A framework for Internet Distributed Computations - http://www.imc.pi.cnr.it/java.html http://www.imc.pi.cnr.it/java.html The Real time Java Framework - http://control.ee.ethz.ch/~ceg/RealTimeJavaFramework/doc/index.html Java Agent Framework - http://dis.cs.umass.edu/research/jaf/ Janx - http://www.bearriver.com/janx.html Open Card - http://www.opencard.org/ Piccolo - http://www.cs.umd.edu/hcil/piccolo/ Symphony - http://zuni.cs.vt.edu/symphony/