It is interesting to look at the usage statistics at PyPI: [http://pypi.python.org/webstats/usage_200805.html#DAYSTATS][]
Besides the front page, the most visited pages are in order (same thing
in April):
- zc.buildout
- setuptools
- zc.recipe.egg
- plone.recipe.zope2instance
- plone.recipe.distros
- python-openid
- elementtree
- plone.recipe.zope2install
Then the packages in the top 60 are mainly zope eggs. This corresponds to the sequence done by a Plone or Zope being build in a buildout.
If you take a closer look at [http://pypi.python.org/webstats/url_200804.html][], the next top hits corresponds to zope.* then plone.* packages.