Disallow access to a Plone site and its children if user is anonymous
Rating widget based on thumbs up and down.
A set of dexterity behaviors for Plone that are assignable to custom dexterity types for complex system setups
Connector from Plone to Arecibo
PloneSoftwareCenter is a tool that keeps track of software projects
A Plone control panel to allow overriding the plone site logo
Date Index for ZCatalog that ignores time[zones]
A zca utility providing the paypal API for plone