The Plone Content Management System
ZC Buildout recipe for installing Plone 2.5.
ZC Buildout recipe for installing Plone 2.1.
Plone Login System
RFC822 marshalling for zope.schema fields
Tools to construct z3c.form forms
Decorators for caching the values of functions and methods
Hooks to facilitate managing custom index values in Zope 2/CMF applications
Registry for application settings (like debconf/ about:config)
JSON serialization/deserialization adapters for Plone.
Event and calendaring related tools not bound to Plone
Collection of Sphinx Themes for Plone Documentations
UUIDs for content items
APIs for managing tiles
Plone ContentRules Engine
Static files for Plone
OpenID authentication support for PAS
Rapido for Plone