Drupal is one of the most popular CMS (Content Management System). Following are some of the fetures of Drupal.
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Current Drupal Version
Drupal 6.14 is the latest stable version.
Visit Drupal Module page
Some of most popular dupal modules
One of the most popular Drupal Module which allows the flexibility to display the list, tables and contents and other elements.
2) CCK (Content Construction Kit)
CCK module allows you to add custom fields to nodes from web browser.
Some of the useful CCK links.