Mezzanine_project is a project mainly written in ..., it's free.
Sample project for Mezzanine
To get this running locally, here are the commands::
$ git clone git://github.com/djangozoom/mezzanine_project.git
$ cd mezzanine_project
$ virtualenv .
$ source bin/activate
(mezzanine_project)$ pip install -r requirements.txt
...
$ cd example_project
$ python manage.py syncdb
$ python manage.py runserver