Aliasing of Plone content
Allow a loggedin user to view a page as an anonymous user
Add classifieds to your Plone intranet or website.
This package allow theme developers to add LESS stylesheets into a Plone site.
Multi language fields for Plone
Ordered Dictionary for Python 2.4 or later
slimbar for listing local communities sites
A portlet showing related items, based on the current contexts tags.
A set of PAS plugins so users are authenticated from another Plone site
Package for SEO
Disallow access to a Plone site and its children if user is anonymous
A Plone API.
Change Plone objects ownership
FAQ - An AT contenttype for Plone
PloneSoftwareCenter is a tool that keeps track of software projects