Weka via CVS

If you want to check out the current state of Weka as it is currently being worked on, you can do so via anonymous CVS. Set the CVSROOT environment variable to: 
    :pserver:cvs_anon@cvs.scms.waikato.ac.nz:/usr/local/global-cvs/ml_cvs
Then you can checkout the latest snapshot of Weka using: 
    cvs login

    cvs co weka

    cvs logout
When you are asked for a password, just hit ENTER.

More information
This information and more about CVS and tools for working with CVS can be found on Sourceforge Wiki.
There you can also find information about how to obtain the source code for the book version of Weka.