SVG
Batik SVG Toolkit, BitFlash Graphics, Inc., CSIRO SVG Toolkit, Elansoft, ILOG JViews SVG, Squiggle, SVG Salamander
DSML
Implementation of a markup language for representing directory services in XML. [Open Source, BSD-like]
Koala Bean Markup Language
Using standard JavaBeans introspection, this package enables "interface-level" serialization and deserialization of JavaBeans, as opposed to the "implementation-level" approach of the core Java Serialization API. [Open Source, BSD-like]
VMTools
A collection of XML-oriented tools for the java platform. Current release of the toolkit contains tools for automatically generating differences between two XML documents.