Hi all,
Welcome to this group dedicated to promotion of sites built on Drupal.
Here are some of the Drupal showcase directories (not belonging to*drupal.org sites) I have found on web. Not many, but enough for begining. You are welcome to complement this list.
http://drupalsites.net
http://drupalmuseum.com
http://drupalsn.com/projects
http://cmsdesigns.org
http://drupalwebsites.com
http://drupalbased.com
http://drupaldiy.com/showcase
http://mydrupal.com/drupal_showcase_some_top_drupal_sites
http://devbee.com/drupal_showcase
The quality of some sites above is questionable - they are mostly hand picked results of search engines. I simply had no time for extensive check and my own Drupal sites portfolio consists of just 1 site at the moment.
Additional writeup about this.
Comments
Cheering about Drupal sitedirectories
Nice list, adding your site to directories specific to Drupal like these is great for SEO and easy work :) Will definitely keep an eye out for more of these directories
Greets from http://www.drupalthemes.biz
A new Drupal showcase
A new Drupal showcase directory http://www.withdrupal.com
_
However this list seems old, but its still effective and useful for promoting Drupal sites. Another great and good looking Drupal showcase is: http://www.drupalprincess.com/
Doubt is the father of invention ... ZendegiyeSabz