Extend the structure of the site by way of content models, data storage, field types, and navigation, so it is more understandable to users.
A simple phone field module that displays 1 select list and 4 textfields to allow Type [select] (Phone, Fax or Mobile), country code [text], area code [text], number [text] and description [text] to be entered into seperate fields.
This module provides a machine name field.
Select More defines a new field (drupal 7) or CCK field (drupal 6) that combines a set of checkboxes with a hidden textarea for each choice.
This module provides a price history feature for Drupal Commerce product variations (and possibly other purchasable entities).
Enables a field UI for taxonomy core fields.
Module to load submenu elements dynamically via AJAX using the "Ajax Load" module.