ZOPE plugins

However, freely available Plugins built on top of Zope offer these kinds of services. At the time of this writing, the Python Package Index lists roughly 400 Plugins that you can browse and even reuse in your own applications. These include Plugins for blogging, content management, internationalization, and e-commerce.

 

http://pypi.python.org/pypi?:action=browse&c=227&c=514&c=518