Magento Extension Websites:
cmsportal.net
Best free place for submitting Template, Extension | CmsPortal - CMS Portal
CmsPortal - the free marketplace for submitting Joomla, Drupal, Wordpress, Magento, phpBB, Prestashop, vBulletin, Opencart and more.
geissweb.de
Web Development and E-Commerce Systems with Magento ||GEISSWEB|
GEISS Weblösungen für Webentwicklung, Homepageerstellung und Online-Shops aus Hessen