Servlets, JDBC, JTA, JavaME, JNDI, JavaOne,JMS,?JAX-WS, JPA, HSQL,Freemarker, JavaFX

Tomcat, JBoss, Glassfish,Weblogic

Lucene,JBPM,JFreeChart, JUnit, Log4J, CXF

JSF,Spring, Struts, Hibernate, EJB

Ant,Maven

Eclipse,Netbeans

Android, JRuby

JSP,Velocity

JMX, Portlets, Lombok, Devoxx, Javalobby, Axis, JIRA, RESTEasy, Terracotta, Ivy,? TestNG, Grails, Mule, ICU4J, MyFaces, Scala, James, Geronimo, JCS, OFBiz, Jetty, GWT, Websphere, JavaMail, FastUtil, Xerces, Griffon, JProbe, SLF4J, Wicket, XOM, Seam, Emma, HttpClient, EHCache, TheServerSide, Roo, Mockito, Guice, FOP, Kindle, Clojure, Clover, Hadoop, Jackrabbit, Livescribe pen, Commons, Tobago, IntelliJ, Jersey, Scalaz, HornetQ, JAX-RS, Lift, Derby, Freemarker,? Mylyn, Gaelyk, MINA, Play,? Cobertura, Antlr, Artima, Findbugs, Hessian, OGNL, Quartz, Trove, Tales, Javolution, QCon, Guava, Colt, Zing, Pico, JAXB, Applets, Groovy, BluRay, Tapestry, JavaRanch, JRoller, Fusion, Excelsior JET, BIRT, JDOM, Yourkit, SmartCard, Fantom, Gradle, OSGi, JSTL, ActiveMQ, JEDI, Camel, ServiceMix, Jython, Joda-Time