Archetypes is a framework for the development of new Content Types in Zope/CMF/Plone.
Archetypes (formerly known as CMFTypes) is a Zope Product which simplifies the creation of new content types under Zope 2 and the Content Management Framework (CMF). A content type might be a document, event, image, or any other content object that is made available for users/content creators to add to a Zope content management site.