File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
http://aspose.com/file-tools

Portals and Portlets

JSR-168 and JSR-286 compliant stuff like Gridsphere, JBoss Portal, eXo, LifeRay etc
What do the icons mean:
  • = Topic with 1 to 5 flags
  • = Topic with 5 or more flags
  • = Topic with 10 or more flags
  • = Topic with unread post(s)