Sun Report Builder
The Sun Report Builder is a relatively new extension for OpenOffice.org that adds code from the Pentaho reporting tool to OOo. It allows you to create “stylish, smart-looking database reports. The flexible report editor can define group and page headers as well as group and page footers and even calculation fields are available to accomplish complex database reports.”
Much of the new functionality coming in future builds of OpenOffice will be delivered in the form of extensions. This will allow the basic application to remain smaller and more efficient, while users who need particular specialty functions will be able to install an extension for their needs.