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XOM is a new XML object model. It is an open source (LGPL), tree-based API for processing XML with Java that strives for correctness and simplicity. XOM is designed to be easy to learn and easy to use. It works very straight-forwardly, and has a very shallow learning curve. Assuming you're already familiar with XML, you should be able to get up and running with XOM very quickly.

Commons Configuration provides a generic configuration interface which enables an application to read configuration data from a variety of sources. Commons Configuration provides typed access to single, and multi-valued configuration parameters. Configuration parameters may be loaded from the following sources: * Properties files * XML documents * JNDI * JDBC Datasource Different configuration sources can be mixed using a ConfigurationFactory and CompositeConfiguration. Additional sources of configuration parameters can be created by using custom configuration objects. This customization can be achieved by extending AbstractConfiguration.

The org.apache.commons.jxpath package defines a simple interpreter of an expression language called XPath. JXPath applies XPath expressions to graphs of objects of all kinds: JavaBeans, Maps, Servlet contexts, DOM etc, including mixtures thereof.

Art of Illusion is a free, open source 3D modelling and rendering studio. Many of its capabilities rival those found in commercial programs. Highlights include subdivision surface based modelling tools, skeleton based animation, and a graphical language for designing procedural textures and materials..

JDiskReport enables you to understand how much space the files and directories consume on your disk drives, and it helps you find obsolete files and folders.

Plucene is a fully-featured and highly customizable search engine toolkit based on the Lucene API. It is not, in and of itself, a functional search engine - you are expected to subclass and tie all the pieces together to suit your own needs. The synopsis above gives a rough indication of how to use the engine in simple cases. See Plucene::Simple in the distribution for one example of tying it all together.

XML-DBMS is middleware for transferring data between XML documents and relational databases. It views the XML document as a tree of data-specific objects in which element types are generally viewed as classes and attributes and PCDATA as properties of those classes. It then uses an object-relational mapping to map these objects to the database. An XML-based mapping language is used to define the view and map it to the database.