You can browse the Weka subversion repository from your web browser:
https://svn.cms.waikato.ac.nz/svn/weka/If you want to check out the current state of Weka as it is currently being worked on, you can do so using subversion.
For checking out the source code:
svn co https://svn.cms.waikato.ac.nz/svn/weka/trunk/wekaThe LaTeX source of the documentation can be checked out like this:
svn co https://svn.cms.waikato.ac.nz/svn/weka/trunk/wekadocsMore information