Drupal API

http://api.drupal.org/api/groups

Views Module

http://drupalmodules.com/module/views

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Great Tool

This module is one of the most useful tools on a Drupal website.
...

Views 2 uses a "no page re-load" method of adding filters and arguments which makes building queries much faster.
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Review by Ultimateboy on May 7, 2008 - 10:36
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Drupal Links

http://drupal.org
http://drupalmodules.com/
http://drupaltaiwan.org

backup module
http://drupalmodules.com/module/backup-and-migrate