Melati is available via anonymous CVS, which also has a web interface.
With the command-line CVS client, you do:
$ cvs -d :pserver:firstname.lastname@example.org:/usr/cvsroot login (Logging in to email@example.com) CVS password: anonymous $ cvs -d :pserver:firstname.lastname@example.org:/usr/cvsroot checkout melati-example-contacts
You will need a CVS client to perform the above procedure. Every Linux distribution comes with command line CVS.
If you are using Eclipse then you can just point to the above repository and checkout as project.
If you want a Windows CVS client, check out www.tortoisecvs.org