Java Webstart
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Source package
You can download a tar ball of containing the fofz source at: https://sourceforge.net/project/showfiles.php?group_id=152440
CVS
You can get the FofZ source via cvs using the following commands:
cvs -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/fofz login
when asked for a password hit enter
cvs -z3 -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/fofz co -P modulename
http://cvs.sourceforge.net/viewcvs.py/fofz