Platforms
- Java SE
- Java EE
- Node.js
- Android
- JavaFX
Containers
- GlassFish
- WebLogic
- WebSphere
- JBoss
- Tomcat
- Geronimo
Frameworks
- Spring Framework
- Jersey
- Grails
- Struts
- Tapestry
- Seam
UI Frameworks
- Angular
- JSF
- JSP
- Vaadin
- GWT
SOA
- ESB
- BPEL
- BOM
Reporting & BI
- JasperReports
- JasperServer
- Apache POI
- BIRT
- Pentaho
- Talend
CMS/EDMS/Portals
- Liferay
- OpenCms
- Alfresco
- Documentum
- FileNet
- Day CRX
Security
- JAAS
- Bouncy Castle
- Spring Security
Interoperability
- IDL
- JDBC
- JNDI
- Scripting
- RMI
- RMI-IIOP
- WSIT (Metro)
GUI
- Swing
- SWT
- JavaFX
- Java 2D
- Java 3D
- Accessibility
- PrintService
- Sound API
Apache Foundation
- Lucene
- Hadoop
- Velocity
- Jackrabbit
- Wicket
Persistence (JPA) & DB
- Hibernate
- MyBatis(iBatis)
- TopLink
- Oracle
- Mysql
- Mssql
- Postgresql
- MongoDB