Almost all of the Apache initiatives ( Xerces, Xalan, Cocoon,
SOAP implementation etc ) are indeed open source. Apache Software Foundation has more details on their website about how to get involved(
www.apache.org )
Good luck!
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Ajith Kallambella M. Sun Certified Programmer for the Java�2 Platform.
IBM Certified Developer - XML and Related Technologies, V1.
Co-author of
Java 2 Certification Passport