Administration tools

The Node System Links module (nodesyslinks) provides an input filter which converts internal node links from their aliased path to their system path.

The DDNS module provides a built in way to update and manage dozens of built-in DDNS providers automatically using Drupal's cron.

The Star Export module exports custom content which specifically includes field collection data.

Make the Drupal admin panel look a little bit like Wordpress.
This is useful for showing the aggregated sidebar menu for content managers and using the admin menu (or smth) for admins.