WebDAV library including a standalone server for python
AutoCode is a flexible tool to autogenerate a model from an existing database.
Skinning for plone made easy
Makes it possible to export custom folder contents (from portal_skins/custom and portal_view_customizations) to filesystem
ATSchemaEditorNG is a framework to provide flexible schema editing for AT content-types
Rendering ZPT macros from python code made easy
GUI for AdvancedQuery with some extensions - searching the easy way for Plone
Example theme for anthill.skinner