Programming languages
Java2 SDK (Swing, RMI, JDBC...)
Java2 EE (JSP/Servlets, EJB, WS, Portlets...)
C, C++, HTML, XML, Perl, Linux shell, Javascript, ...
Frameworks
Structs, JSF, Oracle BI, Oracle FORMS, Oracle Reports, GEF, GMF
Application servers
Oracle AS, Bea Weblogic, IBM Websphere, JBoss,
Borland AppServer, Tomcat
Databases
Oracle (9i, 10g), MS SQL 2000, Informix,
PostgreSQL, MySQL
Portals
Oracle Portal, uPortal
Others
Oracle Discoverer, Eclipse Development Platform