Bayescl is a general purpose Bayesian pattern filtering library for Common Lisp. Development is done in CMUCL, but every effort will be made for cross-platform portability. It is in it's earliest development stages, but you can expect a release shortly.
Official releases can be downloaded from the FTP server .
The ViewCVS interface can be used to download snapshots from the CVS repository.
Documenatation is available online