Stefan Haustein announced
on XML-DEV that he has implemented the SAX parser API
for binary encoded XML.
The binary encoding for XML was developed by the WAP Forum and intended
for use in wireless devices and PDAs.
Haustein's
parser is written in Java, and comes with an example for
use on the Palm Pilot. The author reports that something
like a org.xml.sax.wap package is required to
provide a standard way of dealing with the WBXML
extensions.