Classifier4J Prerelease "This includes the source and demo training and analyzing programs. No sample data is supplied, nor is any usage documentation at all." See also: Contextual Network Graphs, PopFile, PMI-IR and Weka (and Kea).
Apparently, Intel will be doing the same:
"Microprocessor company Intel is soon to release a set of Bayesian network software libraries to help software developers to build better machine learning capabilities into their programs...Intel hopes to release the libraries at the Neural Information Processing Systems 2003 conference on 6 June."