Minimally maintained

The clone module allows users to make a copy of an existing item of site content (a node) and then edit that copy. The authorship is set to the current user, the menu and url aliases are reset, and the words "Clone of" are inserted into the title to remind you that you are not editing the original content.

An Overview of Panels

The Panels module allows a site administrator to create customized layouts for multiple uses. At its core it is a drag and drop content manager that lets you visually design a layout and place content within that layout. Integration with other systems allows you to create nodes that use this, landing pages that use this, and even override system pages such as taxonomy and the node page so that you can customize the layout of your site with very fine grained permissions.

This module allows an admin to set limits on the number of terms that a node can have per vocabulary. This is set separately per content type as well. For example, a page could allow unlimited terms in a category, but a story could limit the same category to four.

An add-on for the Organic Groups (og) module that makes one group mandatory for all new users and/or requires new users to pick a group.

The gotwo.module adds the option to add redirected urls. It's much like the url alias system except that it uses redirects to go to the real url. All visits to the 'go' urls are tracked, so you can see how often a certain 'go' url has been visited. You can optionally force a disclaimer to be displayed before the user is redirected.

This module acts as a digital notary for Drupal; it creates notarized/certified timestamps for content. When normal Drupal content is created, an easily modifiable timestamp is created.