XMLP allows two or more peers to communicate in a distributed environment using XML as its encapsulation language. Read about the W3C XML Protocol Activity. The Infoset defines a set of eleven types of information items in XML documents. Read about the W3C XML Activity. Amaya is W3C's free Web browser and authoring tool.
Source code is available.
If you are interested in annotations, please visit the Annotea home page. A pronunciation lexicon can augment the vocabulary in speech synthesis and speech recognition systems. Read about the W3C Speech Interface Framework and more on the W3C Voice Browser home page. Comments are invited through 5 April. Read about the W3C Device Independence Activity.